Hollywood star Leonardo DiCaprio has taken a pot shot at US President George W Bush's environmental record.
"I think if you asked any environmentalist about George Bush's policies on the environment he gets quite close to a 'D' or an 'F'," DiCaprio told reporters at a news conference in Los Angeles to promote his new documentary, The 11th Hour.
DiCaprio co-produced, co-wrote and narrated The 11th Hour, which features interviews with former Soviet prime minister Mikhail Gorbachev, scientist Stephen Hawking, former head of the CIA James Woolsey and 50 others, including scientists, environmentalists and sustainable design experts.
The film looks at the state of the environment and what can be done to repair the damage humans have made to the planet.