The actor has turned his own life around to become carbon neutral and encouraged others to do the same, speaking at the Live Earth concert in New Jersey on Saturday.
He has even made his own global warming documentary, The 11th Hour, and now wants to turn his attention to teaching children about climate change.
DiCaprio says, "My children and grandchildren are going to suffer because of what's going on today. So it would be fantastic if there were courses on global warming in schools."
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