Aside from his day job, actor Leonardo DiCaprio is also a staunch environmentalist. His latest feature finds the actor seeking answers about climate change. Directed by Fisher Stevens, Before The Flood sees DiCaprio traveling the world and documenting the effects of climate change. The trailer indicates that the doc will not only focus on the current state of the world as it relates to climate change, but solutions to an ever-widening issue.

Before The Flood hits theaters October 21, 2016, and then will air globally on National Geographic October 30, 2016.