I have switched my main search engine to Ecosia, the only climate-friendly search engine. Founded in 2009, it was the first certified B-corporation in Germany. Ecosia uses clean, solar energy to power the searches and donates most of the money generated to plant trees. This makes Ecosia a carbon-negative search engine. Unlike other search engines, it is a not-for-profit company and is privacy-friendly. Reforestation won't be back extinct species to life, but it does help reduce global warming.