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7. Leonardo DiCaprio
Not only has Academy Award-winning actor Leonardo DiCaprio been in the limelight for years, but he's also spent many fighting to make the world a better place.

He created the Leonardo DiCaprio Foundation way back in 1998, a nonprofit dedicated to wildlife and habitat preservation, healthy oceans, water access, climate change, and disaster relief. He also sits on the board of the National Resources Defense Council, and has remained staunchly vocal about these causes.

The actor even used his acceptance speech after taking home the Oscar for Best Actor in 2016 (finally!) to stand up for indigenous peoples and raise awareness about climate change, among other things.