Ecosia is a new, green, eco-friendly search engine. For every search query, approx. 2 sqm of tropical rainforest are saved. Ecosia is being supported by Yahoo and Bing, they run their servers 100% on green electricity and they donate 80% of their advertising revenues to a WWF project saving tropical rainforests wordlwide.
So far, 35.377.780 sqm of tropical rainforest have already been saved, according to Ecosia.

You can make Ecosia your default search engine and thus help making the world a better place!