DiCaprio is next to make documentary on climate

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 in France. DiCaprio co-produced and co-wrote "The 11th Hour," which explains how humans have changed the climate and how to fix the damage.

"It's such an amazingly large issue, and suddenly you feel like, what can I do? What can I do? It's too big for me to deal with," the 32-year-old actor told reporters Saturday.