Climate change and the environment have taken a central place within the US agenda, with Apple director and former US vice president Al Gore's film, An Inconvenient Truth, winning two Academy Awards last night.

The film won in the Best Documentary Feature category. A second Oscar was also awarded for the film's title track, Melissa Etheridge's 'I Need To Wake Up from An Inconvenient Truth'.

The award was given to the film's director Davis Guggenheim and producers Lawrence Bender, Laurie David, Lesley Chilcott and Scott Z Burns. Gore joined the team onstage to receive the award.

The documentary captured Gore's one-year-long US environmental campaign.

Thanking the Academy, Gore said: "My fellow Americans, people all over the world: we need to solve the climate crisis. It's not a political issue, it's a moral issue. We have everything we need to get started with the possible will to act. That's a renewable resource. Let's renew it," he said.

Gore calls the environmental crisis the "overriding world challenge of our time", and plans to dedicate his efforts to forcing world governments to tackle the problem, a CBS News report explains.