Ecosia is a search engine that plants trees with its ad revenue. You use it exactly like google or any other web browsers – but at the same time you help to plant trees in different parts of the world.
Ecosia has already planted around 13 million trees and the number is constantly growing!!
Here is Ecosia’s interesting blog about their projects in Peru, Madagascar, Burkina Faso, and in Indonesia.
The Tree and The Water 