what is your ecological footprint? how many planets does it take to support your lifestyle? take this free quiz to find out!

leading online carbon footprint calculation tools and information to help reduce and offset your emissions - for business and individuals.

we're working around the world to protect the lands and waters on which all life depends and fight climate change. join us.

the union of concerned scientists puts rigorous, independent science to work to solve our planet's most pressing problems. joining with people across the country, we combine technical analysis and effective advocacy to create innovative, practical solutions for a healthy, safe, and sustainable future.

a global research nonprofit working on six critical goals that the world must achieve this decade in order to secure a sustainable future: climate, energy, food, forests, water, cities & transport.

greenpeace

since 1987, conservation international has worked to improve the lives of people everywhere by protecting oceans, forests and other living ecosystems.

visita il sito italiano del wwf, la più grande organizzazione mondiale che opera in difesa dell'ambiente e delle specie a rischio. sostieni i nostri progetti!

wwf australia works tirelessly to protect endangered species and their habitats. join us in the fight against climate change and the protection of our planet's natural resources. learn more about our conservation efforts and how you can get involved.

gdrc is an independent policy think tank that carries out initiatives in the spheres of environment, urban, community, economy and information, and at scales that are effective.