While most people know Leonardo DiCaprio as a world-class, award-winning actor, he has also made a name for himself as a warrior for the defense against global warming in the last decade.
In 1998, he created his own foundation, aptly titled the Leonardo DiCaprio Foundation. DiCaprio "established his foundation with the mission of protecting the world’s last wild places. LDF implements solutions that help restore balance to threatened ecosystems, ensuring the long-term health and well-being of all Earth’s inhabitants."
That's a pretty noble mission is you ask me.