Ecosia

“Ecosia is an eco-friendly Internet search engine backed by Yahoo, Bing and the World Wide Fund For Nature (WWF). It basically works like any other search engine but, unlike others, Ecosia gives at least 80% of its advertising revenue to a rainforest protection program run by the WWF.

Because of this, Ecosia users can save about two square meters of rainforest with every search they do – without paying anything. Furthermore, all Ecosia servers run on green electricity, so they do not cause any CO2 emissions. By using Ecosia, you can turn your web searches green.”