Watch Leonardo DiCaprio's Documentary 'Before The Flood' Now

Leonardo DiCaprio's documentary, Before The Flood is airing tonight on the National Geographic Channel. You can also watch it below.

Want to help? For every use of #BeforeTheFlood across Facebook, Twitter, and Instagram between October 24 – November 18, 21st Century Fox and National Geographic will together donate $1 to Pristine Seas and $1 to the Wildlife Conservation Society, up to $50,000 to each organization.