#AlternativeSearch
Ecosia is the search engine that plants trees with its ad revenue. Get the free browser extension and use #Ecosia every time you search. They also publish their monthly financial reports and tree planting receipts in the spirit of transparency and accountability.
Pity it uses a search engine called Bing but I imagine that is for integration capability and the best deal on revenue to go towards the #trees.
See https://www.ecosia.org/ 
Ecosia – the search engine that plants trees!
The easiest way to help the environment: Just search the web with www.Ecosia.org instead of Google!