Here's another online game which improves your knowledge and helps someone! In this case, you!
How does my answering questions at Answer4Earth help save the Earth?Note: to actually help combat global warming, trees need to be planted in the tropics - Africa, Asia, and Latin America - and that's what the site's partner organisations are doing.
When you play the game, advertisements appear above the question area. The money generated by these advertisements is then used to plant trees. So by playing, you generate the money that pays for the planting of trees all over the world in a united effort to end Global Warming.
Hat-tip: Tom
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