Robert Redford
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Robert Redford's new hope for climate change deal

21 November 2012 Last updated at 00:34 GMT

Actor and director Robert Redford is almost as well known these days for his environmental activism.

He has campaigned against the controversial "fracking" process used to extract natural gas and for a shift away from America's dependence on fossil fuels to more renewable forms of energy.

At the opening of a new environmental studies centre named after him at Pitzer College near Los Angeles, he spoke to the BBC's Rajesh Mirchandani about the politics of climate change.

Redford said he had been disappointed it was not a bigger issue during the recent US presidential election campaign. But said he hoped that President Obama would address it in his second term.

Produced by the BBC's Regan Morris and Travis Peterson