DiCaprio Premieres Own Gore-Style Documentary At Cannes

03/28/2008 02:44 am ET | Updated May 25, 2011

About a decade ago, when Leonardo DiCaprio was on the cusp of megastardom and Al Gore was the U.S. vice president, the two talked together about global warming.

Now an all-out environmental activist, DiCaprio has followed Gore's lead by bringing a climate change documentary to the Cannes Film Festival. DiCaprio co-produced and co-wrote "The 11th Hour," which explains how humans have changed the climate and how to fix the damage.