Use Ecosia
Ecosia is a search engine that on average every 1.1 seconds plants a tree. They have partners all over the world and are making great progress with reforesting bare patches of ground.
Start searching with Ecosia and plant trees at:
If you want to know more then go to:
You can add the extension here:
https://chrome.google.com/webstore/detail/ecosia-the-search-engine/eedlgdlajadkbbjoobobefphmfkcchfk