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European leaders and environmentalists hailed as good news President Obama's decision to attend at least part of next month's climate summit in Copenhagen. Both Sweden - the current president of the European Union - and Denmark, which is hosting the climate talks, said the US leader's presence would boost expectations for the conference.
The European Union is at the forefront of a global push to reduce greenhouse gas emissions. It has pledged to cut those emissions by 20 percent of 1990 levels by 2020. By the same year, it says, 20 percent of its energy will come from renewable sources.
The Obama administration has pledged a provisional target of reducing greenhouse gasses by about 17 percent of 2005 levels by 2020 - with deeper cuts after that. The initial pledge is far less ambitious than the European one. But Mr. Obama is hamstrung by the fact the US Congress has yet to pass climate legislation.
While French Environment Minister Jean-Louis Borl