Global Warming is real and Leonardo DiCaprio is on a mission to prove it. As part of his efforts, he enlisted the help of Academy Award®-winning filmmaker Fisher Stevens of dolphin-nightmareThe Covefame. According to National Geographic, the two traveled across five continents and the Arctic "to gain a deeper understanding of this complex issue and investigate concrete solutions to the most pressing environmental challenge of our time." The result is a film entitled Before the Flood.

The documentary, which was produced by National Geographic and one Martin Scorsese, premiered at TIFF in September to critical acclaim. It is now available for free on a ton of platforms including Hulu, Facebook and the YouTube as part of an effort to get as many people to see it as possible.

DiCaprio has been heralded for his work as an environmental activist and was even made a U.N. Messenger of Peace back in 2014. The film covers a three-year journey, during which DiCaprio speaks with various politicians, scientists, and some of the world's most influential figures including Barack Obama, Pope Francis, and Elon Musk.