Ahead of the Copenhagen climate conference, Justin Rowlatt reports on whether President Obama is on target to keep his climate change promises.
The film reveals two very different sides of America - the people who agree with their president that the US should be leading the world on tackling global warming, and those who see Obama's plans as an attack on their liberties.
Can Obama Save the Planet?, 1900GMT, Wednesday 25 November, BBC Two
One-Minute World News 
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