an interactive website that allows individuals to calculate the amount of carbon dioxide they emit from their daily activities and also provide them with the chance to offset their emissions

allows you to determine how much carbon dioxide you emit in your day-to-day life, providing mechanisms to offset these emissions

implements the same simple carbon-climate models as used in the IPCC, allowing anybody to explore the sensitivity of many policy options and scientific uncertainties

helps individuals and organisations reduce their own impact on global warming; visitors can offset their CO2 emissions through reforestation, renewable energy and energy efficiency projects

helps you to reduce your environmental impact by providing a calculator to identify your personal CO2 emissions, learn about how to reduce them, and purchase renewable energy certificates (green tags) to offset your remaining emissions

allows individuals/entities to participate in the GHG emission reduction market by purchasing emission reductions on-line

encourages individuals and businesses to help stop climate change by signing up for the Challenge online, using the online calculator to determine CO2 emissions, and to pledge to take action to reduce these emissions

emphasizes the close relationship between more efficient transit systems and lower greenhouse gas emissions (GHG), providing interactive emissions calculators, on-line emissions maps, and a wealth of educational content

a community of people convened by the Guardian newspaper committed to reducing their CO2 emissions, focusing upon energy conservation and waste reduction, through making weekly pledges and recording their actions against their pledges

the World Resources Institute helps office-based organizations understand climate change and the practical steps they can take to measure and reduce their CO2 emissions

a consumer campaign to spark a zero emission vehicle (ZEV) marketplace with a pledge to make your next new vehicle purchase a ZEV