General

• The Pembina Institute    
• Government of Canada    
• Environmental Protection Agency (U.S.)    
• United Nations Framework Convention on Climate Change    
• Office of Energy Efficiency - Natural Resources Canada    
• David Suzuki Foundation    

Calculating your Greenhouse Gas Calories

• Earth Day Canada's Conservation Calculator - Earth Day Canada
• Act on CO2 Calculator - UK government
• Safe Climate - World Resources Institute
• Climate Change Calculator - Devon County Council, UK
• Carbon Footprint Calculator - The Nature Conservancy
• Greenhouse Gas Calculator - Environmental Protection Agency (U.S.)

Where you live