California Air Resources Board
Part of California's Environmental Protection Agency, California Air Resources Board promotes the reduction of air pollution in the state of California. One of their overall goals is to reduce California's greenhouse gas emissions.
http://www.arb.ca.gov/homepage.htm

California Chapter of the Sierra Club
The California Chapter of the Sierra Club, a wonderful organization whose members work to save the earth and protect its wildlife. Their site has a wealth of information and helpful green resources.
http://www.sierraclub.org/ca/

California Community Alliance with Family Farmers
An organization that advocates for farmers in California and promotes sustainable farming.
http://www.caff.org/

California Department of Conservation
California Department of Conservation strives to promote the wise conservation and use of California's natural resources by providing environmentally-friendly services and information.
http://www.conservation.ca.gov/index/Pages/Index.aspx

California Department of Water Resources
California Department of Water Resources manages and protects the water resources in the state of California for the health and well-being of its residents, wildlife and the environment.
http://wwwdwr.water.ca.gov/about/mission.cfm

California Environmental Protection Agency
California Environmental Protection Agency creates and enforces laws in California which protect California's natural resources to promote a healthier environment.
http://www.calepa.ca.gov/

California Department of Resources Recycling and Recovery (CalRecycle)
CalRecycle overseas and regulates California's recycling and waste reduction initiatives. CalRecycle offers a great deal of information regarding green practices for recycling.
http://www.calrecycle.ca.gov/

California PIRG
The website of the California Public Interest Research Group.
http://www.akpirg.org/

California Rebate Program for Wind and Fuel Cell Systems
Details the rebates offered by the California Energy Commission for the use of small wind turbines and fuel cells (not solar).
http://www.consumerenergycenter.org/erprebate/index.html

Campaign Earth
Ideas to help you live a sustainable lifestyle with a focus on green energy. http://www.campaignearth.org/index.asp

Carbonfund.org
This company provides carbon offsets as well as education information on how you can reduce your carbon footprint.
http://www.carbonfund.org/site/pages/about_us

CleanTechies
CleanTechies is a leading green career site & environmental business network on clean technology.
http://CleanTechies.com  

Climate Change – EPA
Comprehensive information from the EPA on climate change, what causes it and what we can do to stop it.
http://www.epa.gov/climatechange/

Climate Change – Global Warming
An expansive resource on global warming created by the EPA, including its causes, effects and ways in which we can rectify its effects.
http://www.epa.gov/climatechange/

Colorado Department of Public Health and Environment
Colorado Department of Public Health and Environment promotes the overall health of the public as well as the environment in Colorado. Their website features a great deal of information regarding environmentally-friendly practices and health information.
http://www.cdphe.state.co.us/environmentatoz/index.html

Colorado Chapter of the Sierra Club
The Colorado Chapter of the Sierra Club, a wonderful organization whose members work to save the earth and protect its wildlife. Their site has a wealth of information and helpful green resources.
http://rmc.sierraclub.org/

Colorado PIRG
The website for the Colorado Public Interest Research Group
http://www.copirg.org/

Community Farm in Oregon
Winter Green Farm is a community farm in Oregon which provides fair rates for farmers and organic produce for buyers.
http://www.wintergreenfarm.com/

Compact Fluorescent Light Bulbs
Energy Star defines CFL bulbs, what to look for, their benefits, etc.
http://www.energystar.gov/index.cfm?fuseaction=find

Composting
An introduction to composting, its benefits and what you can and can't compost.
http://vegweb.com/composting/

Conflict-Free Diamonds – Why you should buy them
This non-profit explains why you should choose to buy conflict-free diamonds for both social and environmental reasons.
http://www.conflictfreediamonds.org/

Connecticut Chapter of the Sierra Club
The Connecticut Chapter of the Sierra Club, a wonderful organization whose members work to save the earth and protect its wildlife. Their site has a wealth of information and helpful green resources.
http://connecticut.sierraclub.org/

Connecticut Department of Environmental Protection
Connecticut Department of Environmental Protection strives to protect and conserve the natural resources of the state of Connecticut through both state-wide regulations and education.
http://www.ct.gov/dep/site/default.asp

Connecticut PIRG
The website for the Connecticut Public Interest Research Group.
http://www.connpirg.org

Conservation International
Empowering societies worldwide to take part in protecting their environments and living sustainably.
http://www.conservation.org/discover/mission_strategy/pages/mission.aspx

CREDO Mobile – Green Cell Phone Company
A US green cell phone company that not only provides great service but donates a great deal to environmental causes and groups.
http://www.credomobile.com/mission/Green-Statement.aspx