User:Wavelength/Articles userfied/List of environmental topics/C

• cabbage worm (larva of any of three species of lepidopteran) (crop pest)
• cabin cycle (vehicle)
• cable transport
• cacophony
• cactus plugging ("saguaro ... species is endangered")
• (cadaver: see) body
• cadmium (see under Precautions)
• cadmium poisoning
• (cadmium-nickel battery) nickel-cadmium battery (NiCd) (NiCad)
• caesium (cesium) (see under Precautions)
• cage (enclosure)
• cairn
• Cairo-Haifa train bombings 1948
• caisson (engineering)
• (caisson disease) decompression sickness (DCS) (diver's disease) (the bends)
• cake (firework) (candle barrage)

• calcareous grassland (alkaline grassland)
• calcicolous grasslands in the British National Vegetation Classification system
• calcifugous grasslands and montane communities in the British National Vegetation Classification system
• calculating local time
• Caledonian Forest (in Scotland in the UK) (greatly reduced)
• California Air Resources Board
• California Aqueduct
• California Aqueduct bikeway
• California Bighorn Sheep ("an endangered species")
• California Certified Organic Farmers (CCOF)
• California Coastal Conservancy
• California Coastal Trail
• California Conservation Corps (CCC)
• California Debris Commission
• California Department of Parks and Recreation
• California Department of Toxic Substances Control (DTSC)
• California Department of Transportation
• California Department of Water Resources
• California Drivers Handbook
• California earthquakes of June 2005
• California electricity crisis (of 2000 and 2001)
• California Energy Resources Conservation and Development Commission
• California Environmental Quality Act (CEQA)
• California Fuel Cell Partnership
• California Geological Survey
• California Gold Rush
• California Green Archives
• California High Speed Rail
• California Highway Patrol (CHP)
• (California highways: see) list of California state routes
• (California hurricanes: see) list of California hurricanes
• California mixed evergreen forest
• California Proposition 50 (2002) (regarding water projects)
• California Proposition 51 (2002) (regarding transportation)
• California Proposition 53 (2003) (regarding infrastructure)
• California Proposition 65 (1986) (regarding toxins)
• California Public Interest Research Group (CALPIRG) (involving issues including the environment)
• California State Route 85 (between Mountain View and southern San Jose)
• California Trail
• California Vehicle Code - Bicycle Relevant Sections
• California Water Wars
• California Waterfowl Association
• Callendar effect (in global warming)
• Calnev Pipeline (from California to Nevada in the US)

• camouflage
• CAMBIA (Center for the Application of Molecular Biology to International Agriculture) (in Australia)
• Campaign against Climate Change (CCC) (CaCC) (in the UK)
• Campaign Against Marijuana Planting (CAMP) (in California in the US)
• Campaign for Dark Skies (CfDS) (in the UK)
• Campaign for Nuclear Disarmament (in the UK)
• Campaign to Protect Rural England (CPRE) (formerly Council for the Preservation of Rural England)
• campfire
• camphor (see sentence 1 in paragraph 2)
• camping
• Campo Imperatore Near-Earth Objects Survey (CINEOS) (in Italy)
• campsite
• Campylobacter (genus of bacteria able to infect humans)

• (Canada geography) geography of Canada (see under Hydrography and under Natural resources and under Natural hazards and under Current environmental issues)
• Canada Goose (see "nuisance" in paragraph 4 and see "serious decline" in paragraph 8)
• Canada Weather Extremes
• Canada Well-Being Measurement Bill (see "ecosystems")
• Canada's busiest airport

• Canadian Association of Petroleum Producers (CAPP)
• Canadian Astronomical Society
• (Canadian beaver: see) American Beaver (see "Their dams help" in paragraph 7 of preamble and see "their dams can cause flooding" in paragraph 1 under Threats)
• Canadian Burn Foundation
• Canadian Cancer Society
• (Canadian Cascades) Cascade Range (see under Human uses and under Protected areas and under Provincial Parks)
• Canadian Coast Guard (CCG) (Garde côtière canadienne) (GCC)
• Canadian Coast Guard Auxiliary (CCGA)
• Canadian Coast Guard College (CCGC)
• Canadian Council for Tobacco Control (CCTC) (formerly Canadian Council on Smoking and Health [CCSH])
• Canadian Environment Awards
• Canadian Environmental Protection Act (of 1999)
• (Canadian Falls) Horseshoe Falls (Canada) (see "hydroelectricity" in paragraph 4)
• Canadian Food Inspection Agency (CFIA)
• Canadian Forest Service
• Canadian Geographic (bimonthly magazine) (see "environmental geography" in paragraph 2)
• Canadian Geographic Information Systems (CGIS)
• Canadian Grain Commission
• Canadian Health Network
• Canadian Hurricane Centre
• Canadian Hydro Developers Inc.
• Canadian Hydrographic Service (CHS)
• Canadian Institutes of Health Research (CIHR) (see "environmental factors" in paragraph 5)
• Canadian National Parks
• Canadian Natural Resources Limited
• Canadian Nuclear Safety Commission (CNSC)
• Canadian Parks and Wilderness Society (CPAWS)
• Canadian response to Hurricane Katrina
• Canadian Ski Patrol (CSP) (providing safety and rescue services)
• Canadian Space Agency (CSA) (l'Agence spatiale canadienne) (ASC) (see under Canadian satellites)
• Canadian Urban Transit Association (CUTA)
• Canadian Weather ([http://www.canadianweather.org http://www.canadianweather.org])
• Canadian Wildlife Service (CWS) (Service canadien de la faune) (SCF)

• canal (see also list of waterways and list of canals in the United States)
• canal lock (navigation lock)
• (Canal Zone: 2 meanings selected from disambiguation page)
• Suez Canal Zone
• Panama Canal Zone
• canals of Ireland
• canals of the United Kingdom
• canary (see "early warning system" in paragraph 7 under Pet canaries)

• (Canberra bushfires of 2003) 2003 Canberra bushfires (in Australia)
• Canberra Commission on the Elimination of Nuclear Weapons (in 1996) (in Australia)
• Canberra Nature Park (in Australia)
• (Canberra storms December 2 2005: see) severe storms in Australia (see paragraph 1 under Australian Capital Territory)
• cancer (see under Environment and diet)
• Cancer Alley (in Louisiana in the US)
• cancer cluster (in epidemiology)
• Cancún (a city in Mexico) (see under Environmental concerns and under Hurricane Wilma)
• candela (cd) (SI unit of luminous intensity)
• Candida (genus) ("a genus of yeasts ... that can cause fungal infections")
• Candida control diet
• Candidiasis ("commonly called yeast infection or thrush")
• candle (see under Fuel and candle holders and under Hazards)
• candle clock
• cane rat ("a pest species on many crops")
• cane spider ("they feed on pests")
• (cane toad) Giant Neotropical Toad ("introduced ... [to] control agricultural pests")
• canine distemper (infectious disease affecting animals)
• canine influenza (dog flu)
• canine parvovirus (CPV) ("a contagious virus affecting dogs")
• cannabis (drug) (listed because of environmental effects of cultivation)
• cannabis cultivation (see especially under Traditional Outdoor Cultivation Techniques)
• cannabrick construction ("a sustainable development resource for housing")
• cannel coal (candle coal)
• cannibalism (see under Non-human cannibalism)
• (canola) rapeseed (see under Cultivation and uses and under Rapeseed and health and under Controversy and under Pests and diseases affecting rapeseed)
• (canopy [forest]: see) rainforest (see under The canopy)
• canopy research (in forest canopies)
• canopy walkway (in a forest canopy)
• Canton, Illinois Tornado of 1975 (in the US)
• canyon (gorge)

• Cape Canaveral (in Florida in the US) (see "chosen for rocket launches" in paragraph 6)
• Cape Lion ("specimens ... found ... in Russia")
• Cape Verde-type hurricane
• Cape Vulture (Cape Griffon) ("Vulnerable")
• Cape Wind Project (a planned wind farm) (in Massachusetts in the US)
• Capitan Gap fire (in 1950) (in New Mexico in the US)
• capping inversion (in meteorology) (see "severe thunderstorms" in paragraph 5)
• Caprivi (the Caprivi Strip) (Caprivi Region) (formally known as Itenge) (in Namibia in Africa) (see "wildlife" in paragraph 2 under Geography)
• captive breeding
• Capuchin catacombs of Palermo (in Sicily in Italy)

• car (see under Environmental improvements and under Alternative fuels and batteries)
• (car accident: see) motor-vehicle collision (traffic collision) (auto accident) (road accident) (motor vehicle collision)
• car alarm
• Car and Driver (American magazine)
• car battery
• car bomb
• car boot sale (useful for managing resources and waste)
• car chase
• car co-op (car share) (car club)
• (car crash: see) motor-vehicle collision (traffic collision) (auto accident) (road accident) (motor vehicle collision)
• (car culture: see) effects of the automobile on societies (see under Environmental changes)
• (car ferry: see) train ferry
• Car Free Days
• car handling (vehicle handling)
• (car horn: see) Klaxon ("trademark for an electromechanical horn or alerting device")
• car noise
• car safety
• car surfing
• (car tax: see) vehicle excise duty (VED) (road tax) (see "carbon dioxide" in paragraph 3)
• car-free movement
• car-free zone (auto-free zone) (pedestrianised zone) (see also list of carfree places)
• (car-park: see) parking lot (see under Environmental considerations)
• (car-pool lane: see) high-occupancy vehicle (HOV)
• car-trains

• carbide lamp (acetylene lamp)
• carbofuran ("the most toxic of the carbamate pesticides") ("trade name Furadan")
• carbon (see under Precautions)
• carbon audit regime
• (carbon black) soot (lampblack) (Pigment Black 7)
• carbon credit
• carbon cycle
• carbon dioxide (see under Atmosphere)
• (carbon dioxide emissions: see) list of countries by carbon dioxide emissions
• carbon dioxide emissions in mainland China
• carbon dioxide laser (CO₂ laser)
• (carbon dioxide poisoning) hypercapnia
• carbon dioxide sink (CO₂ sink)
• carbon emissions trading
• (carbon fiber reinforced plastic) graphite-reinforced plastic (CFRP) (CRP) (see under Recycling)
• carbon filtering ("a method of water purification")
• carbon fixation
• carbon flux
• carbon footprint
• carbon intensity
• (carbon market: see) carbon emissions trading
• carbon monoxide (see under Toxicity and under Carbon monoxide in the atmosphere)
• carbon monoxide detector
• carbon monoxide poisoning
• carbon nanofoam
• carbon nanotube
• carbon offset
• carbon sequestering
• (carbon sink: see) carbon dioxide sink (CO₂ sink)
• carbon tax
• carbon tetrachloride (tetrachloromethane) (see under Safety)
• (carbon trading: see) carbon emissions trading
• carbonic acid (see under Carbonic acid and rain water)
• carbonization
• (carbonyl chloride) phosgene ("was used as a chemical weapon")
• carburetor heat (carburettor heat) (carb heat) ("to help prevent or clear carburetor icing")
• carburetor icing (carburettor icing)

• carcinogen
• cardboard (see "recyclable" in paragraph 2 under Today's corrugated cardboard)
• cardboard box (see "house" in paragraph 4 of preamble and see footnote references)
• Carfree Cities
• cargo ship (freighter)
• (Caribbean Disaster Emergency Response Agency) CDERA
• Caribbean Meteorological Institute (CMO)
• Caribbean Monk Seal ("now considered extinct")
• Caribbean Plate ("an oceanic tectonic plate")
• carjacking
• Carlsbad Caverns National Park (in New Mexico in the US) (see "sanctuary" in paragraph 1 under Bats and see "bat guano ... as fertilizer" in paragraph 1 under History)
• carnivore
• carnivorous plant
• carnivorous trees
• Carolus Linnaeus (see under Linnaean taxonomy)
• (carpark: see) parking lot (see under Environmental considerations)
• Carpathian Convention (for "the protection and sustainable development of the Carpathians")
• Carpathian Mountains (in Europe) (see under Convention on the protection of the Carpathians)
• carpenter ant (see "poison arrow frogs")
• carpenter bee (important pollinator) (see "pollinator decline" under Deterrence)
• carpet bombing (area bombing)
• carpool (see under Advantages and under Disadvantages)
• (carpool lane: see) high-occupancy vehicle (HOV)
• carrion ("can be a source of disease")
• carrion beetle ("name ... not accurate")
• Carrion Crow (see "eater of carrion" in paragraph 3 under Characteristics)
• carrion flower (stinking flower)
• carrying capacity
• carsharing
• Carson Sink (see paragraphs 3 and 5)
• Cartagena Protocol on Biosafety
• cartography (mapmaking)
• Carysfort Reef lighthouse (in Florida in the US)

• Cascade Alpine Guide (any one of a series of climbing guides)
• Cascade Head (a Biosphere Reserve) (in Oregon in the US)
• Cascade Range (see under Human uses and under Protected areas and under Provincial Parks)
• Cascadia Earthquake (in 1700) (in western North America)
• Cascadia subduction zone (in 1700) (in western North America)
• cash crop (see paragraph 5)
• (Caspian oil pipeline: see) Baku-Tbilisi-Ceyhan pipeline (see under Environment)
• Caspian Sea (see under Fauna and see under Oil and see paragraph 1 [before list] under International Disputes and see under Characteristics and ecology)
• Caspian Tiger (Persian Tiger) (extinct)
• casualties of energy

• cat (see under Environmental impact)
• cat litter (see under Biodegradable litter)
• (cat litter box: see) litter box
• cat scratch fever (cat-scratch disease) (Parinaud oculoglandular disease) (la maladie des griffes du chat)
• (catabatic wind: see) katabatic wind
• catacombs
• catagenesis (geology)
• (catalogue astrographique) star catalogue
• catalytic converter ("to reduce ... emissions") (see under Catalyst Poisoning)
• (catalytic cracking: see) cracking (chemistry) (applied in petroleum geology)
• catalytic reformer
• (catastrophe: 1 meaning selected from disambiguation page)
• disaster
• catastrophe modeling (cat modeling)
• catastrophic failure
• Catastrophic Florida hurricanes: 1900-1960
• Catastrophic Florida hurricanes: 1961-present
• catastrophic kill (type of damage to a vehicle)
• catastrophism

• (catback exhaust: see) exhaust system (see under Cat-back)
• catch and release ("a form of recreational fishing")
• catch crop
• (catchment area: 1 meaning selected from disambiguation page)
• water catchment area
• (catchment basin) drainage basin (water basin) (watershed)
• catchwater
• catchwater drain
• (category 1 hurricane: see) Saffir-Simpson Hurricane Scale (see same for "category 2 hurricane" and "category 3 hurricane" and "category 4 hurricane" and "category 5 hurricane")
• (category one special nuclear material: see) special nuclear material (see same for "category two special nuclear material" and "category three special nuclear material")
• caterpillar (see "pests" in paragraph 8)
• cathode heater
• cathodic protection (CP)
• cathode ray tube (CRT) (see under Health danger and under High vacuum safety)
• cattle (see under Uses of cattle and under Ox)
• (cattle dog: see) Australian Cattle Dog (ACD) (Queensland Hereler) (Blue Heeler) (Red Heeler)
• Cattle Egret (see paragraph 5)
• cattle grid (cattle guard)
• cattle mutilation
• cattle raiding in Kenya
• (cattle ranch: see) ranching
• cattle rustling (cattle raiding)
• cattle station

• Caucasian honeybee (important pollinator) (see under Behavior)
• (causes of earthquakes: see) earthquakes (see under Causes)
• (causes of haze: see) haze
• (causes of Hurricane Katrina: see) alternative theories regarding Hurricane Katrina
• causeway
• Causeway Bay (in Hong Kong) (see "land reclamation" under History)
• causewayed enclosure (term "causewayed enclosure" preferred to older term "causewayed camp")
• causewayed ring ditch
• cave (see also list of caves)
• Cave Bear (extinct)
• Cave Creek Complex fire (in 2005) (in Arizona in the US)
• Cave Creek disaster (in 1995) (in New Zealand)
• cave digging (see "explosive material" in paragraph 3)
• (cave diver: see) recreational diving
• cave diving (see under Hazards)
• cave lion (European cave lion) (Eurasian cave lion) (extinct)
• cave monastery
• cave painting (rock painting)
• Cave Research Foundation (CRF) (in the US)
• cave rescue
• cavefish
• Caverns of Sonora (in Texas in the US)
• caviar ("the processed, salted roe of various species of fish, most notably sturgeon") (see "overfishing and pollution" in paragraph 2)
• caving (cave exploration)
• (Cayapo) Kayapo (a native people living in rainforests in Brazil)

• CDERA (Caribbean Disaster Emergency Response Agency)

• Cedar Fire (in 2003) (in California in the US)
• ceiling balloon ("to determine the height of the base of clouds above ground level")
• ceilometer ("to determine the height of a cloud base")
• celebrations of the September 11, 2001 attacks
• celestial coordinate system
• celestial equator
• celestial horizon (rational horizon)
• celestial navigation (astronavigation)
• celestial pole
• cell phone jammer
• cell site (mobile phone mast) (cellular base station) (Personal Communications Service [PCS] station)
• cell-mediated immunity
• cellophane (see paragraph 3)
• (cellular tumor antigen p53: see) P53 ("It is very important for cells in multicellular organisms to suppress cancer.")
• Celsius
• cement
• cemetery (graveyard) (see also list of cemeteries)

• Center for Analysis and Prediction of Storms (CAPS) (in Oklahoma in the US)
• Center for Consumer Freedom (CCF) (formerly called the Guest Choice Network) (in the US)
• Center For Earth and Planetary Studies (CEPS)
• Center for Elephant Conservation (in Florida in the US)
• (Center for Environmental and Estuarine Studies: renamed) University of Maryland Center for Environmental Science (UMCES) (in the US)
• Center for Functional Nanomaterials (CFN) (in the US)
• Center for Integrated Nanotechnologies (in the US)
• Center for International Environmental Law (CIEL)
• Center for International Forestry Research (CIFOR) (based in Indonesia)
• Center for Nanophase Materials Sciences (in the US)
• Center for Nanoscale Materials (in the US)
• Center for Planetary Research (in Denmark)
• Center for Responsible Nanotechnology (in the US)
• Center for Science in the Public Interest (CSPI) (in the US)
• (Center for the Application of Molecular Biology to International Agriculture) CAMBIA (in Australia)
• Center for the Study of Carbon Dioxide and Global Change (based in Arizona in the US)
• center high-mounted stop lamp (CHMSL)
• center of population
• Center on Animal Liberation Affairs (CALA)
• center pivot irrigation (a method of crop irrigation)
• (center pivot irrigation in Saudi Arabia: see) irrigation in Saudi Arabia
• Centers for Disease Control and Prevention (CDC) (in Atlanta in the US)
• centimetre gram second system of units (CGS)
• central air conditioning
• (Central America Hurricane of 1857: see) SS Central America (Ship of Gold)
• Central American Volcanic Belt
• Central Arizona Project Aqueduct (CAP) (in the US)
• (Central Artery/Tunnel Project [CA/T]) Big Dig (Boston, Massachusetts) (in the US)
• Central Black Earth Region (Central Chernozem Region) (in Russia)
• Central Eastern Rainforest Reserves (in Australia)
• Central England temperature
• Central European Summer Time (CEST)
• Central Florida Tornado of February 2007
• Central Park Zoo (in New York City)
• central reservation (median [highway])
• Central Valley Project (CVP) (in California in the US)
• Central Valley Project Water Association (CVPWA)
• centralized traffic control (CTC) (in rail transport)
• Centre for Education and Research in Environmental Strategies (CERES) (environment park in Australia)
• Centre for Environment Education, India (CEE)

• ceramic discharge metal halide lamp
• cereal ("In some developing nations, cereal grains constitute practically the entire diet of common folk.")
• cereal leaf beetle ("an agricultural pest and biological control success story")
• (CERES) Centre for Education and Research in Environmental Strategies (environment park in Australia)
• CERES (Clouds and the Earth's Radiant Energy System) ("an on-going NASA meteorological experiment in Earth orbit")
• CERN (European Organization for Nuclear Research) (Organisation Européenne pour la Recherche Nucléaire)
• Cerrado (ecoregion) (in Brazil)
• Cerros Colorados Reservoir (in Argentina) (see "erosion")
• Certified Landscape Professional (CLP)
• (certified organic: see) organic certification
• Certified Ornamental Landscape Professional (COLP)
• Certified Turfgrass Professional
• Certified Turfgrass Professional-Cool Season Lawns
• certified wood
• cesium (see under Precautions)
• cetacean bycatch
• Cetacean Conservation Center (Centro de Conservación Cetacea) (in Chile)
• cetology (branch of marine mammal science)

• (CFC) chlorofluorocarbon

• Chad-Cameroon Petroleum Development and Pipeline Project (in Africa)
• Chagas disease (American trypanosomiasis) ("a human tropical parasitic disease") (see under Prevention)
• chain pumps (see "irrigation" in paragraph 2)
• chalk ("resistant to erosion")
• (chalk downland: see) downland (see under Downland habitat)
• chalk formation (see under Chalk petroleum reservoirs)
• (chalk grassland: see) calcareous grassland (alkaline grassland)
• Chalk River Laboratories (a Canadian nuclear research facility) (in Ontario in Canada)
• chalk river unidentified deposits (Chalk River unidentified deposits)
• chalk stream
• (Challenger disaster) Space Shuttle Challenger disaster
• (Challenger Space Shuttle) Space Shuttle Challenger
• Changde chemical weapon attack (in 1943) (by Japan against China)
• channel (geography)
• Channel Islands (in the UK) (see "tidal variation" in paragraph 4 under Geography)
• Channel Islands National Marine Sanctuary (in California in the US)
• Channel Islands National Park (in California in the US)
• Channel Islands of California (Santa Barbara Islands) (see under Wildlife)
• Channel Tunnel (le tunnel sous la Manche) (the Chunnel) (the Tunnel) (see under Fire)
• channelization (in environmental engineering)
• chaos theory (see "butterfly effect" under Chaotic motion)
• (Chapman cycle: see) ozone-oxygen cycle
• characteristic earthquakes
• characteristic light
• charcoal (see "deforestation" in paragraph 2 under Production and see "gas mask" in paragraph 2 under Use)
• (charcoal filtering: see) activated carbon (activated charcoal) (see under Environmental applications)
• charity shop (thrift store) (op shop) (useful for managing resources and waste)
• Charles Darwin Foundation ("dedicated to the conservation of ecosystems of the Galapagos Islands")
• Charles Darwin National Park (in Australia)
• Charles Darwin Research Station (in Puerto Ayora on Santa Cruz Island in the Galapagos Islands)
• (charred bone) bone char (bone black) (animal charcoal) (see under Uses)
• charring
• Chart of Nuclides (describing the nuclear, or radioactive, behavior of nuclides)
• Chartered Institute of Environmental Health (CIEH) (in the UK)

• (CHEERS) Children's Environmental Exposure Research Study (in the US)
• cheetah (see under Habitat and under Conservation status)
• chelation (see "water softeners" in paragraph 2 and see "environmentalists" in paragraph 5 and see "ecology" in paragraph 7)

• chemical accidents
• Chemical and Biological Arms Control Institute (CBACI)
• chemical attack
• Chemical, Biological, Radiological and Explosive Defence Group (CBRE) (in Singapore)
• Chemical Coast (see "Emissions" in paragraph 3)
• chemical composition of living beings
• chemical ecology
• (chemical element abundance) abundance of the chemical elements
• chemical elements data references
• (chemical explosive: see) explosive material
• (chemical fertilizer: see) fertilizer (see under Environmental effects of fertilizer use)
• Chemical Galaxy (a new periodic table)
• chemical hazard
• chemical hazard label
• chemical industry
• chemical laser
• chemical makeup of the human body
• chemical oceanography
• chemical oxygen demand (COD) (in environmental chemistry)
• chemical oxygen generator (solid fuel oxygen generator) (SFOG) (TGK) (see under Uses
• chemical oxygen iodine laser (COIL)
• chemical tanker
• chemical toilet
• chemical warfare (see also list of chemical weapon agents)
• chemical waste
• chemical weapon designation
• chemical weapon proliferation
• Chemical Weapons Convention (Convention on the Prohibition of the Development, Production, Stockpiling and Use of Chemical Weapons and on their Destruction)
• (chemical weathering: see) weathering (see under Chemical Weathering)
• chemigation valve (in agriculture)
• Chemists Without Borders (CWB) (see "sustainable energy")
• chemtrail theory

• (Chenier Caminanda Hurricane) 1893 Chenier Caminanda Hurricane (in Louisiana in the US)
• Cherenkov radiation (see under Uses)
• Chernobyl (Chornobyl) (see paragraphs 5 and 6 under History)
• Chernobyl accident (in 1986) (in Ukraine)
• Chernobyl Children's Project International (CCPI) (by the UN)
• Chernobyl2020 (commemorative exhibition)
• chernozem (black earth) ("a kind of soil") ("does not require any fertilizing")
• CHESF (Companhia Hidro-Elétrica do São Francisco; São Francisco's Hydroelectric Company) (in Brazil)
• Chevron Corporation ("one of the world's largest global energy companies")
• Chevron U.S.A., Inc. v. Natural Resources Defense Council, Inc. (see under Facts)
• chewing gum ban in Singapore (see paragraphs 2 and 4 under History)
• Cheyenne Plains Gas Pipeline (in the US)

• Chi-Chi earthquake (in 1999) (in Taiwan)
• Chicago (in the US) (see under Great Chicago Fire and under 2004 Chicago Earthquake)
• Chicago Botanic Garden (in the US)
• Chicago Climate Exchange (CCX)
• Chicago Flood (in 1992)
• Chicago Heat Wave of 1995
• Chicago Sanitary and Ship Canal
• Chicago Transit Authority (CTA)
• Chicago Tunnel Company (see under Disaster)
• Chicagoland Bicycle Federation (CBF)
• chicken coop (chickenhouse)
• (chicken factory: see) factory farming
• chicken flu ("an avian flu that can affect humans")
• chickenpox (chicken pox) (varicella disease) ("highly contagious")
• chigger (arthropod) (jigger)
• chigoe flea
• Children's Environmental Exposure Research Study (CHEERS) (in the US)
• children's traffic park at Shivaji Garden (in India)
• (children's zoo: see) petting zoo
• chimney (see under Drawbacks)
• chimney felling
• chimney sweep (see "toxic gases" in paragraph 4)
• Chimney Swift (bird) (see "habitat" in article)

• China (see "drought" and "dust storms" in paragraph 4 under Geography and climate)
• China Aerospace Science and Technology Corporation (CASC)
• China Agricultural University (in Beijing in China)
• China Australia Migratory Bird Agreement
• (Chinese CO₂ emissions) Carbon dioxide emissions in mainland China
• Chinese fishing nets (of Kochi) (in India)
• (Chinese famine of 1958-1961: see) Three Years of Natural Disasters
• Chinese garden
• (China National Offshore Oil Corporation) CNOOC Ltd.
• China National Petroleum Corporation
• China Oilfield Services
• China Petroleum & Chemical
• (China Syndrome: 2 meanings from disambiguation page)
• nuclear meltdown
• The China Syndrome, a 1979 movie dramatizing the events of a nuclear meltdown
• China University of Geosciences
• Chinese restaurant syndrome (monosodium glutamate symptom complex) (see "mold" under Cause)
• Chinese River Dolphin (see under The chronology of the species' rapid decline and under Conservation and under Three Gorges Dam)
• (Chinese space program) space program of China
• Chinese White Dolphin (see under Threats and under Timeline of main events)
• Chinook wind (see "inversion smog" under Chinooks and health)

• chionophile
• Chipko movement (see "tree hugger" in preamble)
• Chiquita Brands International Inc. (see "polluting the environment" in paragraph 1 under Cincinnati Enquirer Controversy)
• chisel plow (see "sustainable" in paragraph 1)

• chlamydia (see under Chlamydia in nonhumans)
• Chlamydophila pneumoniae (previously known as Chlamydia pneumoniae)
• Chlorfenvinphos (insecticide)
• (chlorinated fluorocarbons: see) haloalkane (see under Environmental issues)
• chlorination ("a method of water purification")
• chlorine (see under Precautions)
• chlorine dioxide ("can explode easily") (see under Uses)
• (chlorofluorocarbons: see) haloalkane (see under Environmental issues)
• chlorosis
• chocolate (see under Lethal toxicity for domesticated animals and under Lead)
• (chocolate poisoning) theobromine poisoning
• cholera (see under Transmission and under Spread and under Prevention)
• cholera epidemic of 1831
• Cholera Riots (in 1830-1831) (in Russia)
• Chota Nagpur dry deciduous forests (in India)

• Christian Vegetarian Association (CVA)
• christian vegetarianism
• christian views on cloning
• Christmas Bird Count (CBC)
• Christmas bonfires (in Louisiana in the US)
• Christmas flood 1717 (Kerstvloed 1717) (in northern Europe)
• Christmas Island (see under Flora and fauna)
• Christmas Island Frigatebird (see paragraph 2)
• Christmas lights (fairy lights) (twinkle lights)
• Christmas tree (see under Artificial trees [especially under Environmental issues ] and see under Care and disposal of natural trees)
• christmas tree (oil well)
• chromium (see under Precautions)
• chronic toxicity
• chronology of world oil market events (1970-2005)

• cigar (see under Health issues)
• cigarette (see "inhalation" and "farmland" in paragraph 4 under Health effects and see "public smoking bans" in paragraph 6 under same)
• (cigarette lighter: see) lighter
• (cigarette packet warning signs: see) tobacco packaging warning signs (see under United Kingdom and Ireland)
• (cigarette smoking: see) tobacco smoking (see under Health effects and under Passive smoking )
• cigarillo
• ciguatera (a foodborne illness poisoning)
• (Cimicidae: see) bedbug (bed bug)
• Cimmerian plate ("an ancient tectonic plate")
• Cincinnati Zoo and Botanical Garden (in Ohio in the US) ("world renowned for its breeding programs")
• cinder (see "used" in preamble and see under Uses)
• cinder cone (in volcanology)
• circadian rhythm (see "design of spacecraft environments" in paragraph 2 under Animal circadian rhythms and see "stress tolerant plants" in paragraph 2 under Plant circadian rhythms)
• circadian rhythm disorders
• circle of latitude (parallel)
• (circumferential highway) beltway (ring road) (orbital motorway)
• circumnavigation
• circumpolar arctic

• (CITES) Convention on the International Trade in Endangered Species of Wild Flora and Fauna
• cities along the Silk Road
• cities with the most highrise buildings
• (cities with the most people: see) List of cities by population
• Citizens for Alternatives to Chemical Contamination (CACC) (based in Michigan in the US)
• Citizens for Global Solutions (see "global health and environment" under Activism and Advocacy)
• Citrus Vein Phloem Degeneration (CVPD) (Citrus Greening Disease) (Yellow Shoot Disease) (Yellow Dragon Disease) (Likubin) (Immediate Withering Disease) (Leaf Mottle Yellows) (Citrus Dieback)
• citrus production (see under Citrus canker)
• City Beautiful movement
• City Life (book)
• (city bus: see) transit bus (commuter bus)
• (city parks: see) list of municipal parks in the United States
• (city pigeon: see) Rock Dove (see under Feral pigeons in cities)
• (city planning: see) urban planning (see under Planning and the environment)
• city rhythm
• city services
• city simulation

• Clark County Regional Flood Control District (CCRFCD) (in Nevada in the US)
• Clark County Water Reclamation District (CCWRD) (in Nevada in the US)
• Clark County Wetlands Park (in Nevada in the US)
• classical swine fever (CSF) (hog cholera)
• classification of electromagnetic fields
• classification yard (marshalling yard) (for railroad cars)
• Claus process ("the most significant gas desulfurizing process") (for crude oil)
• clay (see "landslides" in paragraph 5)
• clay earth pigment
• clay pit
• Clay Pit Ponds State Park Preserve (on Staten Island in New York state in the US)
• clay-water interaction
• Clayoquot Sound (on Vancouver Island in British Columbia in Canada) (see paragraphs 3 and 4)

• (clean air: see) Air pollution
• Clean Air Act (in the US)
• Clean Air Act 1956 (in the UK)
• Clean Air Act (1970) (in the US)
• Clean Air Act (1990) (in the US)
• clean coal
• Clean Development Mechanism (CDM) (under the Kyoto Protocol)
• (clean energy: see) green energy
• Clean Energy Future Group (in Australia)
• Clean Up Australia
• (Clean Urban Transport for Europe: see) Fuel Cell Bus Club (see under CUTE)
• Clean Water Act (in the US)
• cleaner shrimp
• cleaning station (in marine biology)
• cleanroom (a type of manufacturing environment)
• cleanroom suit (clean suit) (bunny suit) ("an overall garment worn in a clean room")
• Clear Skies Act of 2003 (in the US)
• clear-air turbulence (CAT)
• clearance car (type of railroad car)
• Clearance Diver (dealing with explosives underwater)
• clearfelling (clearcutting)
• CLEO Cisco router in Low Earth Orbit (an Internet router)
• Cleveland East Ohio Gas Explosion (in 1944)

• click beetle (see "pests" in paragraph 2)
• cliff
• (cliff jumping: see) jumping platform
• (cliff railway) funicular (funicular railway) (inclined railway) (inclined plane)
• cliff-dwelling

• climate
• Climate and Geography of Halifax Regional Municipality (in Canada)
• Climate Audit (commentary site [blog] on climate change)
• climate change
• (Climate Change 1995: see) Intergovernmental Panel on Climate Change
• (climate change controversy: see) global warming controversy
• (Climate Change Convention: see) United Nations Framework Convention on Climate Change (UNFCCC) (FCCC)
• (Climate Change Levy: see) United Kingdom Climate Change Programme
• (Climate Change Programme: see) United Kingdom Climate Change Programme
• (Climate Change-Kyoto Protocol: see) Kyoto Protocol
• climate changes of 535-536
• climate commitment studies
• (climate control: see) HVAC
• (climate crash: see) abrupt climate change
• Climate Diagnostics Center (in the US)
• climate engineering
• (climate forcing: see) radiative forcing
• Climate Group
• climate house
• climate model
• climate modeller
• Climate Monitoring and Diagnostics Laboratory (CMDL) (in the US)
• climate of Adelaide
• climate of Antarctica
• climate of Chicago
• climate of Costa Rica
• climate of Hong Kong
• climate of India
• climate of Karachi
• climate of London
• climate of Missouri
• climate of Salt Lake City
• climate of Scotland
• (climate of Singapore: see) geography and climate of Singapore (see under Climate of Singapore)
• climate of the Alps
• climate of the United Kingdom
• climate of Virginia
• Climate Outreach and Information Network (British charity)
• (climate parameters, forcings and feedbacks: see) parametrization (climate)
• (climate science: see) climatology
• climate sensitivity
• (climate simulation: see) climate model
• climate surprise
• (climate techno-fix: see) climate engineering
• (climate theory: see) Charles de Secondat, Baron de Montesquieu (see "climate theory" in paragraph 3 under Political views)
• (climate variability: see) climate change
• (climate warming: see) global warming
• (climate weapon: see) Weather Modification Operations and Research Board (in the US) (see under Weather Control)
• climateprediction.net (distributed computing project)
• climatic determinism (equatorial paradox) (see also environmental determinism)
• Climatic Regions of India
• Climatic Research Unit (at the University of East Anglia in the UK)
• (climatic zone: see) clime
• climatology
• climax community
• climax vegetation

• climbing
• climbing area
• climbing command
• climbing equipment (climbing gear)
• climbing galaxias (a fish of Australia and New Zealand)
• climbing garden
• (climbing glossary) glossary of climbing terms
• (climbing grade) grade (climbing)
• climbing guidebook
• climbing harness
• climbing hut
• (climbing on sight) on-sight climbing
• (climbing protection) protection (climbing)
• climbing route
• climbing shoe
• climbing specialist (cycling)
• climbing system
• climbing technique
• climbing wall
• clime (climatic zone)

• (clinical ecology) environmental medicine
• clinical surveillance
• Clinton Global Initiative (see "Climate Change" under Stated goals)
• clipping (gardening)

• Cloaca Maxima ("one of the world's earliest sewage systems")
• (clone [botany]: see) vegetative reproduction (see "clones" under Horticultural aspects)
• clone (genetics)
• cloning
• Cloning: At Issue (2003) (book)
• (cloning extinct species: see) cloning (see under Cloning extinct species)
• closed ecological system (CES)
• Clostridium (a genus of bacteria) ("includes common free-living bacteria as well as important pathogens")
• clothing (see under Functional clothing)
• cloud (see under Global dimming)
• cloud albedo ("a measure of the reflectivity of a cloud")
• cloud base ("the lowest portion of a cloud")
• cloud chamber (Wilson chamber) ("for detecting ... ionizing radiation")
• cloud condensation nuclei (CCNs) (see under Phytoplankton role)
• cloud cover
• cloud feedback
• cloud forcing (see "greenhouse effect" in paragraph 2)
• cloud forest
• (cloud formation: see) nephology
• cloud physics
• cloud seeding
• cloud street
• cloud suck
• cloud types
• cloud-buster
• cloudburst (see "destruction" in paragraph 2 and see "Mumbai" in paragraph 3)
• (Clouds and the Earth's Radiant Energy System) CERES ("an on-going NASA meteorological experiment in Earth orbit")
• CloudSat ("a NASA environmental satellite")
• cloverleaf interchange

• CNOOC Ltd. (China National Offshore Oil Corporation)

• coach (vehicle)
• coal (see especially under Harmful effects of coal burning)
• coal bed methane extraction (CBM extraction)
• coal dust (see under Risks and under Coal dust in energy generation)
• (coal gas: see) syngas
• (coal gasification: see) coal (see under Gasification)
• (coal liquefaction: see) coal (see under Liquefaction)
• coal measure
• (coal mine fire: see) mine fire
• Coal Mine Safety and Health Act of 1969 (in the US)
• coal mining (see under Dangers to miners and under Environmental impacts)
• coal oil
• coal pier
• (coal pit: see) coal mining
• (coal power plant: see) fossil fuel power plant (FFPP)
• coal tar
• coal trucks
• (coal workers' pneumoconiosis: see) pneumoconiosis
• (coal-burning power plant: see) fossil fuel power plant (FFPP)
• (coal-fired power station Ekibastusz: see) Power Station Ekibastusz
• (coal-gas: see) town gas
• coalbed methane (coalbed gas)
• coast (see under Environmental importance and under Human impacts) (see also list of countries by length of coastline)
• coast guard
• coastal erosion
• Coastal Management
• (coastal marsh: see) marsh
• coastal plain
• coastal waterfall
• (coastal wetland: see) wetland
• Coastal Zone Management Act (of 1972) (in the US)

• cobalt (see under Precautions)
• cobalt bomb
• (Coca-Cola Company: see) The Coca-Cola Company (see under Coca-Cola in India)
• cocaine (see "hazards" in last paragraph under Freebase and see "defoliants" under Sources)
• (Coccinellidae: see) ladybird (ladybug) (lady beetle) (see "organic gardeners" under Commercial usage)
• Cochabamba protests of 2000 (in Bolivia) ("because of the privatization of the municipal water supply") (see under Declaration)
• cockroach (see paragraphs 5 and 6 under iiology)
• cocktail effect
• cocoa (see "pollination" under Issues with cocoa as a commodity)
• coconut (see "coconuts falling from trees" in paragraph 4 under The fruit)
• coconut crab (see under Conservation status)
• Cod War (between Iceland and the UK) (problem aggravated by overfishing)
• code amber alert
• Codex Alimentarius (see "food additives" and "pesticide residues" and "modern technology" under Scope)
• codling moth ("agricultural pest")
• coefficient of haze (in meteorology)
• coelacanth (a species of fish, previously considered to be extinct)
• coffee (see under "Ethical Coffee" and under Coffee as a fertilizer)
• (coffeeweed) Senna obtusifolia (foetid cassia) (Chinese senna) (sicklepod) (sickle-pod) (sickle pod) (coffee weed) (coffee pod) (coffee-pod) (java bean) (java-bean) (arsenic weed)
• (cofferdam: see) dam (see under Cofferdams)
• coffin ship (see "sharks" in paragraph 3)
• (cog railway) rack railway (rack-and-pinion railway)
• cogeneration (combined heat and power) (CHP) (see under Types of plant)
• (coherent radiation: see) laser (see under Laser safety)
• coke (fuel) (see "deforestation" under History)

• (cold desert: see) desert (see paragraph 4 under Types of desert)
• cold fusion (a type of nuclear fusion)
• cold seep (cold vent) (an area of the ocean floor)
• cold weather boot
• cold weather rule (cold weather law) (for public utility companies)
• (coldest place on earth: see) climate of Antarctica (see under Temperature)
• coldest temperature achieved on earth
• Coleman Company, Inc. (see "Coleman Lamp" in paragraph 4)
• (coleopteran) beetle (order Coleoptera) (see under Impact on humans)
• (coliform: see) Escherichia coli (E. coli) (bacterium indicating fecal contamination in groundwater) (see "coliform" in paragraph 2)
• coliform bacteria
• Coliform Index ("a rating of the purity of water")
• Colima Volcano ("the most active volcano in Mexico")
• Colin Campbell (geologist) ("predicts that oil production will peak by 2007")
• collecting fossils
• collective farming
• collector road
• Collège de Contrôle et de Surveillance des Ressources Pétrolières (in Chad)
• (College of Environmental Science and Forestry: see) State University of New York College of Environmental Science and Forestry (SUNY-ESF)
• collimated light (see "light from stars" in paragraph 3)
• collimator (device)
• colluvium (in geology)

• (Colombian Coffee Federation) Federación Nacional de Cafeteros de Colombia
• colonization of Mars
• colonization of the Moon
• Colony Collapse Disorder (CCD) (a honey bee disease)
• Colorado-Big Thompson project ("a very large water diversion project in Colorado") (in the US)
• Colorado Mineral Belt (CMB)
• Colorado potato beetle (see under As a crop pest)
• Colorado River (in the US and in Mexico) (see "rich estuarine marshland" in paragraph 5 under Course)
• Colorado River (Argentina) (see "dam" in paragraph 3)
• Colorado River (Texas)
• Colorado river dispute (between the US and Mexico)
• Colorado tick fever
• Columbia Basin (in Canada and in the US)
• Columbia Basin Project ("an irrigation project") (in Washington state in the US) (see under Environmental consequences)
• (Columbia disaster: see) Space Shuttle Columbia disaster
• Columbia Trail (in New Jersey in the US)
• Columbian Exchange
• (Columbian Exposition of 1893) World's Columbian Exposition (The Chicago World's Fair) (see under Electricity at the fair)

• combine harvester (combine)
• combined cycle power plant (combined cycle gas turbine [CCGT] plant)
• combined diesel-electric and gas (CODLAG) (for ships)
• combined diesel and diesel (CODAD) (for ships)
• combined diesel and gas (CODAG) (for ships)
• combined diesel or gas (CODOG) (for ships)
• combined gas and gas (COGAG) (for ships)
• combined gas and steam (COGAS) (for ships)
• combined gas or gas (COGOG) (for ships)
• (combined heat and power [CHP]) cogeneration
• combined nuclear and steam propulsion (CONAS) (for ships)
• combined sewer
• combined steam and gas (COSAG) (for ships)
• (combustible: see) fuel
• combustion (burning)
• (combustion turbine) gas turbine
• comet (pyrotechnics)
• comfort noise ("in radio and wireless communications")
• (comfort room: see) toilet (see under Etymology)
• (Comité international des poids et mesures) (CIPM) International Committee for Weights and Measures

• Committee on Climate Change Science and Technology Integration
• Common Agricultural Policy (CAP) (in the European Union) (see under Environmental problems)
• common asparagus beetle
• common beta emitters
• Common Chimpanzee (see "habitat" under Basic facts)
• Common Dolphin (see under Conservation)
• Common Ground (in the UK) (charitable organization)
• (common land: see) commons
• (Common Loon: see) Great Northern Diver (see "acid rain" and "pollution" and "dams" in paragraph 9)
• (Common Porpoise) Harbour Porpoise (see under Population and distribution and under Conservation)
• common rail direct fuel injection
• Common Starling (European Starling) (see paragraphs 8 through 11)
• common yabby (a crayfish) (see "aquaculture" and "dam banks")
• common-pool resource (CPR) (common property regime [CPR]) (common property resource) (see paragraph 2 under Common-pool resource)

• (communicable disease) infectious disease
• (Communicable Disease Center: see) Centers for Disease Control and Prevention (CDC) (in Atlanta in the US)
• (communicable disease reporting) infectious disease reporting
• communication with submarines
• communications satellite (comsat)
• Community bicycle program
• Community Climate System Model
• community ecology
• community emergency response team (CERT) (in the US)
• Community Fisheries Control Agency (proposed) (in Europe)
• Community Forests in England
• Community Friendly Movement
• community garden
• community gardening
• community separator (see paragraph 2)
• community-acquired pneumonia (CAP)
• community-supported agriculture (see "ecological, organic or biodynamic farming methods" in paragraph 1 under The CSA System)
• (commuter belt) metropolitan area
• (commuter bus) transit bus
• (commuter rail) regional rail (see same for "commuter train")

::(see also list of United States Commuter Rail systems by ridership)

• commuter rail in North America
• (commuter town) bedroom community (dormitory town)
• (commuter transport) public transport (public transportation) (public transit) (mass transit)
• commuting

• compact fluorescent lamp (CFL) (compact fluorescent light bulb)
• compactor (for waste material)
• (Compagnie Française des Pétroles) Total S.A. (French oil company)
• Compagnie universelle du canal maritime de Suez (Universal Suez Ship Canal Company)
• (Companhia Hidro-Elétrica do São Francisco; São Francisco's Hydroelectric Company) CHESF (in Brazil)
• (companion animal) pet
• companion planting
• compartmental models in epidemiology
• (compass variation: see) magnetic declination
• Compassion In World Farming (based in Europe) (for animal welfare)
• competing species
• competition (biology)
• (complete IPCC list of greenhouse gases: see) IPCC list of greenhouse gases
• (composite cone) (composite volcano) stratovolcano
• compost
• compost windrow turner
• composting toilet
• compound locomotive (see paragraph 2)
• (Comprehensive Environmental Response, Compensation, and Liability Act [CERCLA]) Superfund (in the US)
• Comprehensive Smoking Education Act (in the US)
• Comprehensive Test Ban Treaty (CTBT)
• Comprehensive Test Ban Treaty Organization (CTBTO)
• compressed air energy storage (CAES)
• compressed natural gas (CNG)
• (compressed-air vehicle: see) air engine (see "no roadside emissions" in paragraph 3)
• compression fossil
• compulsive hoarding (pathological hoarding)
• computational epidemiology
• Computer Conservation Society (CCS) (in the UK)
• (computer display/CRT: see) cathode ray tube (CRT) (see under Health danger and under High vacuum safety)
• Computer History Museum (in the US)
• computer recycling
• Computers for African Schools (a charity in the UK)

• concentrated animal feeding operation (CAFO)
• (concentration basin) mediterranean sea (in oceanography)
• concrete
• concrete canoe
• concrete dome (see "natural disasters" in paragraph 3)
• concrete jungle
• concrete recycling
• concrete ship
• (condensate: 1 meaning selected from disambiguation page)
• natural gas condensate
• condensation
• (condensation trail) contrail (vapor trail)
• condensed matter physics
• condenser (steam turbine)
• condom (see under Environmental impact)
• cone snail (cone shell) (see "venom" in paragraph 2 of preamble)
• CONELRAD (Control of Electromagnetic Radiation) (in emergency broadcasting)
• Conestoga wagon
• Conference on the Human Environment (in 1972) (in Sweden)
• (confined animal feeding operation) concentrated animal feeding operation (CAFO)
• (confined aquifer: see) aquifer (see under Confined versus unconfined)
• conformal fuel tank (CFT)
• (Conférence générale des poids et mesures [CGPM]) General Conference on Weights and Measures (CGPM, never GCWM)
• (congestion [traffic]) traffic congestion
• (congestion charge: see) road pricing (congestion pricing)
• (coniferous forest: see) temperate coniferous forests
• connate fluids (see "hydrocarbon prospectivity" under Significance)
• Connections 2030 (transportation project) (in Wisconsin in the US)
• conotoxin (see "venom" in paragraph 1)

• consequences of the spanish flu [sic]
• conservation agriculture
• Conservation and Neocolonialism
• Conservation and Research Center (in the US)
• conservation area
• conservation areas in Singapore
• conservation areas of Portugal
• Conservation Authorities Act (in Ontario in Canada)
• Conservation Authority (in Ontario in Canada)
• conservation biology
• Conservation Centre Liverpool (in th UK)
• conservation designation
• conservation district
• conservation easement
• conservation ecology
• conservation ethic
• conservation genetics
• Conservation Halton (in Ontario in Canada)
• conservation headland
• conservation in Australia
• conservation in New Zealand
• conservation in the Republic of Ireland
• conservation in the United Kingdom
• Conservation Law Foundation (CLF) (in New England in the US)
• conservation medicine
• conservation movement
• conservation park (n Australia and New Zealand)
• conservation status
• conservation status (TNC)
• Conservation Volunteers Australia
• (conservationism: see) conservation ethic
• conservationist
• conservatory (greenhouse)
• Conservatory of Flowers (in San Francisco in the US)
• (conserve habitat: see) habitat conservation

• (Constellation Observing System for Meteorology, Ionosphere, and Climate) COSMIC
• constructed wetland
• construction
• construction delay
• construction engineering
• Construction, Forestry, Mining and Energy Union (CFMEU) (in Australia)
• construction industry of Japan
• construction site safety
• Construction Today (monthly magazine)
• (construction vehicle: see) engineering vehicle
• Consultative Group on International Agricultural Research (CGIAR)
• (consumer good: see) final good
• consumerism

• contagious bovine pleuropneumonia
• (contagious disease: see) disease (see under Transmission of disease)
• (contagious diseases) infectious diseases (communicable diseases)
• container composting
• container deposit legislation
• container garden
• container ship
• container terminal
• (contamination) pollution
• (contiguous zone: see) territorial waters (territorial sea)
• continental climate
• continental crust
• Continental Divide (Great Divide) (in North America)
• continental drift
• (continental glacier: see) glacier
• continental shelf
• continuous flow intersection (CFI)
• (continuous permafrost: see) permafrost (see "global warming" under Permanent extent)
• continuous-wave radar
• contour canal
• contour plowing (contour farming)
• Contract Work Hours and Safety Standards Act (in the US)
• (contraflow lane) reversible lane
• contraflow lane reversal ("for quick emergency evacuation")
• contrail (condensation trail) (vapor trail)
• Control Car Remote Control Locomotive (CCRCL)
• (Control of Electromagnetic Radiation) CONELRAD (in emergency broadcasting)
• controlled airspace
• controlled atmosphere (for agricultural storage)
• controlled burn (in forest management)
• (controlled demolition: see) demolition (see "explosives" in paragraph 3)
• controlled explosion
• controlled flight into terrain (CFIT) (in aviation)
• (controlled thermonuclear fusion: see) fusion power
• controlled-access highway
• controller (irrigation)

• conurbation (see also list of conurbations in the United Kingdom)

• convection (see under Atmospheric convection and under Oceanic convection)
• convection cell
• convection oven
• convective available potential energy (CAPE) (in meteorology)
• Convention for the Conservation of Antarctic Marine Living Resources
• Convention for the Conservation of Antarctic Seals
• Convention on Biological Diversity (adopted in 1992)
• Convention on Certain Conventional Weapons
• Convention on Environmental Impact Assessment in a Transboundary Context
• Convention on Fishing and Conservation of Living Resources of the High Seas
• Convention on Long-Range Transboundary Air Pollution
• (Convention on Road Traffic: 1 meaning selected from disambiguation page)
• Vienna Convention on Road Traffic
• Convention on the Conservation of European Wildlife and Natural Habitats
• Convention on the International Trade in Endangered Species of Wild Flora and Fauna (CITES)
• Convention on the Prevention of Marine Pollution by Dumping Wastes and Other Matter
• Convention on the Prohibition of Military or Any Other Hostile Use of Environmental Modification Techniques
• (Convention on the Prohibition of the Development, Production and Stockpiling of Bacteriological [Biological] and Toxin Weapons and on their Destruction) (BWC) Biological Weapons Convention
• (Convention on the Prohibition of the Development, Production, Stockpiling and Use of Chemical Weapons and on their Destruction) Chemical Weapons Convention
• (Convention on the Territorial Sea and Contiguous Zone) United Nations Convention on the Law of the Sea
• (Convention on Wetlands of International Importance Especially as Waterfowl Habitat) Ramsar Convention
• (conventional wastewater treatment: 4 meanings selected from disambiguation page)
• sewage treatment
• industrial wastewater treatment
• agricultural wastewater treatment
• (radioactive waste treatment: see) radioactive waste
• (convergent plate boundary: see) plate tectonics (see under Convergent (destructive) boundaries)
• (conveyor transport: 2 meanings selected from disambiguation page)
• conveyor belt (belt conveyor)
• escalator

• (cooker: see) stove
• cooking on a campfire
• (cooking pit) earth oven
• cool roof
• cooler
• (cooling fan: see) fan (implement)
• cooling pond
• cooling tower
• (cooling water: see) watercooling
• cooperative (see under Agricultural cooperative)
• (cooperative cycling: see) vehicular cycling (see paragraph 2 in preamble)
• cooperative farming
• Cooperative Institute for Arctic Research
• Cooperative Institute for Atmospheric Sciences and Terrestrial Applications (CIASTA)
• Cooperative Institute for Climate and Ocean Research (CICOR)
• Cooperative Institute for Climate Applications and Research (CICAR)
• Cooperative Institute for Climate Science (CICS)
• Cooperative Institute for Limnology and Ecosystems Research (CILER)
• Cooperative Institute for Marine and Atmospheric Studies (CIMAS)
• Cooperative Institute for Mesoscale Meteorological Studies (CIMMS)
• Cooperative Institute for Research in Environmental Sciences (CIRES)
• Cooperative Institute for Research in the Atmosphere (CIRA)
• Cooperative Research Centres (in Australia)
• Cooperative Wheat Research and Production Program

• copper (see under Biological role)
• copper(I) cyanide (copper cyanide) (cuprous cyanide) (cupricin)
• coppicing
• coprolite ("fossilized feces")
• (coprology) scatology ("the study of feces")
• coprophagia (dung eating)

• coral (see under Environmental effects on coral)
• (coral atoll: see) atoll
• coral biology
• coral bleaching
• coral calcium
• (coral dive sites: see) diving locations
• coral reef (see under Threats to Reefs and under Protection and restoration of reefs)
• coral sand (see under Environmental issues)
• Coral Sea (near Australia)
• Coral Sea Islands ("administered by the Australian Department of the Environment")
• Coral World (marine park) (in the U.S. Virgin Islands)
• cordgrass (see under Cultivation)
• cordillera
• Cordilleran Ice Sheet
• (core meltdown: see) nuclear meltdown
• core-mantle boundary
• Coriolis effect
• Cork Harbour (in Ireland)
• cormorant (see "exploited ... fishing skills" in paragraph 2 of preamble)

• corn and pellet stoves and furnaces (for renewable energy)
• corn construction
• (corn earworm: see) Helicoverpa zea ("major agricultural pest")
• (corn pellet stove: see) stove (see under Modern corn, pellet or biofuel stove)
• corn smut (disease of maize, caused by a fungus)
• Cornell High Energy Synchrotron Source (CHESS) (in New York state in the US) (see "biohazard" under History)
• Cornell Lab of Ornithology (in New York in the US) (see "BirdSource Project" in paragraph 1 and see "ivory-billed woodpecker" in paragraph 3)
• corona (meteorology)
• coronal mass ejection (CME) (solar event)
• Coronaviridae ("a family of viruses")
• Coronavirus ("a genus of animal virus") (see under Recent discoveries of novel human coronaviruses)
• Corot (space mission) (COnvection ROtation and planetary Transits) (to search for extra-solar planets)
• Corporate Average Fuel Economy (CAFE) (in the US)
• corporate crime (see "damage to the environment" in paragraph 1)
• corporate farming (see under Genetic engineering)
• corporate malfeasance
• corporate manslaughter (see "health and safety" under#corporate manslaughter#Discussion|Discussion]])
• (corpse flower: see) Rafflesia ("The flowers smell like rotting meat, ...")
• Corroboree frog ("critically endangered")
• corrosion
• corrosion inhibitor
• Corsican montane broadleaf and mixed forests
• cortex (archaeology)

• cosmetics (see under Ingredients)
• (cosmetic testing on animals: see) animal testing (see under Cosmetic testing on animals)
• COSMIC (Constellation Observing System for Meteorology, Ionosphere, and Climate)
• Cosmic Anisotropy Telescope (CAT)
• (Cosmic Background Explorer) COBE ("to investigate the cosmic background radiation" etc.)
• cosmic microwave background experiments
• cosmic microwave background radiation (CMB) (CMBR) (CBR) (MBR)
• cosmic noise
• cosmic ray (see under Lightning)
• Cosmic Ray Deflection Society
• (cosmic X-ray: see) X-ray astronomy
• Cosmochemical Periodic Table of the Elements in the Solar System
• cosmochemistry
• (cosmodrome: see) spaceport
• (cosmonaut: see) astronaut
• (cosmonautics) astronautics
• (cosmosphere: see) Kansas Cosmosphere and Space Center (in the US)
• cotton (see under Production)
• (cotton plantation: see) plantation
• Cotwall End Nature Reserve (in the UK)

• coulee ("a deep steep-sided ravine formed by erosion")
• Council for a Livable World (in the US)
• Council for National Parks (in the UK)
• Council of State and Territorial Epidemiologists (CSTE) (in the US)
• Council on Bioethics (in the US)
• Council on Environmental Quality (CEQ) (in the US)
• Council on Tall Buildings and Urban Habitat (CTBUH) (in Chicago the US)
• countries affected by the 2004 Indian Ocean earthquake
• countries with the most highrise buildings
• country fire service (CFS) (in Australia)
• country park
• country parks and conservation in Hong Kong
• Countryside Agency (in England)
• Countryside and Rights of Way Act 2000 (in the UK)
• Countryside Commission (in England)
• Countryside Council for Wales (CCW) (Welsh: Cyngor Cefn Gwlad Cymru) (CCGC)
• coupled human-environment system
• courtyard
• cove ("generally a circular or round inlet with a narrow entrance")
• cove lighting
• covenant running with the land
• covered bridge
• coversand
• (cow bomb: see) exploding cow
• cow chip ("a flat, round, hard piece of cow feces")
• cow dung ("the feces of the bovine species")
• (cowbane) Cicuta virosa (see "cicutoxin" in paragraph 3)
• (cowcatcher) pilot (locomotive)
• (Cowgate fire, 2002) Edinburgh Cowgate fire, 2002 (in Scotland in the UK)
• cowpie (cow pie) ("a colloquialism for bovine feces")
• cowpox
• (cow's milk: see) milk
• Coxsackie virus
• Coxsackie B4 virus
• coyote (sometimes found in suburban areas)

• Crab-eating Macaque ("a possible vector for monkeypox")
• cracking (chemistry) (applied in petroleum geology)
• craftivism
• crag and tail (in glaciology)
• (crater: 4 meanings selected from disambiguation page)
• impact crater
• volcanic crater
• caldera
• subsidence crater
• crater lake
• crawling water beetle ("an endangered species")
• (crawlspace: see) basement (see under Drainage considerations)
• (creek: see) stream
• creek (tidal)
• cremation (see under Environmental reasons)
• creosote (see under Health effects)
• crepuscular rays (in atmospheric optics)
• (crescent moon: see) lunar phase
• crevasse (in glaciology)
• (critical/endangered: see) ecoregion conservation status
• critical area (of an airport)
• Critical Mass (bicycle)
• (critically endangered: see) endangered species
• (criticisms of veganism: see) veganism (see under Criticism and controversy)

• crocodile (see under Danger to humans)
• (crop breeding: see) plant breeding
• crop circle
• (crop duster: see) agricultural aircraft
• crop insurance
• crop residue
• crop rotation
• crop yield
• (cropland: see) farm
• (cropsharing: see) community-supported agriculture (see "ecological, organic or biodynamic farming methods" in paragraph 1 under The CSA System)
• cross sea
• (cross-fertilization: see) heterosis
• (cross-pollination: see) pollination (see under Pollination in agriculture)
• crossbreeding
• crossroads (culture)
• crossroads village
• crown land
• cruelty to animals
• cruelty-free
• cruise ship (see "hurricane Katrina" in last paragraph)
• crust (geology)

• cryobiology ("the study of living organisms, organs, biological tissues or biological cells at low temperatures")
• cryobiosis
• cryogenic fuel
• cryogenics
• cryonics
• cryopreservation
• cryoprotectant
• (cryosols: see) gelisols
• cryosphere
• cryovolcano
• cryptic species complex
• cryptobiosis
• cryptobiotic soil
• (cryptodepression: see) Skadar Lake (in Serbia and Montenegro and in Albania) (see paragraph 2)
• cryptoexplosion
• cryptosporidiosis (parasitic disease)
• Cryptosporidium (genus of parasites)
• (crystal methamphetamine: see) methamphetamine (see under Production)
• (crystalline water) ice

• CS gas (tear gas) (see under Risks to health)
• CTC off-road trail grades (for cycling) (in the UK)

• Cuban Missile Crisis (Caribbean Crisis) (October Crisis) (climaxing in October 1962)
• Cuban Tree Frog ("invasive species")
• cultivar (see "genetic engineering" under Legal points)
• (cultivation) tillage
• (cultivation of the land) agriculture(see under Environmental problems)
• cultivator
• cultural ecology
• cultural landscape
• (culture [microbiology]) microbiology
• cultured pearl
• cumulonimbus (see under Effects)
• (cumulonimbus with mammatus: see) mammatus cloud
• (cumulonimbus with pileus: see) pileus (meteorology)
• cumulus castellanus cloud
• cumulus cloud
• cumulus congestus cloud
• cumulus humilis cloud
• cumulus mediocris cloud

• (cup anemometer: see) anemometer (see under Cup anemometers)
• curb cut (dropped kerb)
• curb extension
• curb ramp
• curb weight (kerb weight)
• (curbside recycling) kerbside recycling
• Curculionidae ("true" weevils) (see "subgroups of Curculionidae")
• Curculioninae (see "boll weevil")
• (Curculionoidea: see) weevil ("destructive to crops")
• curie (Ci) (a former unit of radioactivity)
• Curie Institute (Paris)
• Curie Institute (Warsaw)
• (Curie, Marie) Marie Curie (Maria Sklodowska-Curie) (chemist and pioneer in radiology)
• current (electricity) (see under Electromagnetism and under Electrical safety)
• current (fluid)
• Current Population Survey (CPS) (in the US)
• current science and technology events
• current solar income
• current sources and sinks (of electricity)

• cyanide (see under Mining and under Fishing)
• (cyanide process) gold cyanidation (MacArthur-Forrest process) (see under Controversy)
• cyanobacteria (see "cyanotoxins" under Other)
• cyber-terrorism
• cyborg (cybernetic organism)
• cycad (type of seed plant) (see under Conservation)
• cycle (with a list of many kinds of cycle, including many which are relevant to the environment) (see also list of cycles)
• (cycle courier) bicycle messenger
• cycle facilities at roundabouts
• (cycle helmet) bicycle helmet (see under Do helmets reduce fatalities or serious injuries?)
• (cycle lane: see) segregated cycle facilities
• (cycle lane debate: see) bike lane debate
• cycle of erosion (in geology)
• cycle rickshaw (pedicab) (velotaxi) (trishaw)
• (cycleway: see) segregated cycle facilities (see also list of cycleways)
• Cycleway in Bogota (Ciclovia) (in Colombia)
• cycleways in England
• cycleways in Wales
• cycling
• cycling advocacy
• cycling gloves
• cycling hand signals
• cyclist
• cyclone
• cyclone furnace (a type of coal combustor)
• (cyclone preparedness: see) hurricane preparedness
• cyclonic separation (method of removing particles from an air or gas stream)

List of environment topics

:Category:Environment