Ecosia - the search engine that plants trees
www.ecosia.org
Ecosia uses the ad revenue from your searches to plant trees where they are needed the most. By searching with Ecosia, you’re not only reforesting our planet, but you’re also empowering the communities around our planting projects to build a better future for themselves. Give it a try!

I came across this the other day and thought if anyone else besides me takes these promises to plant trees or some other carbon capture method with a grain of salt.

As a search engine it acts as a proxy for Bing and then uses Open Street Maps when looking up addresses, so it adds a dash of privacy.