Leonardo campaigns for Al Gore's film

Environment-friendly actor Leonardo DiCaprio has urged all his fans to watch former presidential candidate Al Gore's new movie about global warming.

DiCaprio caught An Inconvenient Truth when it was screened at the Cannes Film Festival last week and he has written a glowing endorsement on his website.

It reads: "Go see An Inconvenient Truth when it comes to your town! Gore is funny, engaging, open and downright on fire about getting the surprisingly stirring truth about what he calls our 'planetary emergency' out to ordinary citizens before it's too late."