Complex: Leonardo DiCaprio has long had a passion for getting peeps educated on the dire reality of climate change. Even way back in 2007 (i.e. the year of things like Plain White T's and Spider-Man 3), dude was getting the message out with expansive documentaries like The 11th Hour. A lot has happened since then, such as DiCaprio finally nabbing an Oscar and, yes, the continued destruction of our planet. To get everyone caught up, DiCaprio is back at it with Before the Flood.
Leo dives underwater while...