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Leonardo DiCaprio

As an environmentalist, DiCaprio is best known for having co-written, produced, and narrated the global warming film “The 11th Hour.” But long after the credits rolled, his own Leonardo DiCaprio Foundation continued to lobby hard for a variety of environmental and humanitarian issues, including forest preservation, healthy oceans, clean water access, and renewable energy.

DiCaprio actively serves on numerous environmental boards including the Natural Resources Defense Council, Global Green USA, World Wildlife Fund and the International Fund for Animal Welfare. On top of sizeable donations he’s committed over the years, the superstar actor has also pledged to forgo private jets and drives a Prius.

Photo: Getty Images