Science

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President Barack Obama told world leaders Friday that it was time to come together on a climate change agreement, calling out stubborn positions that have stood in the way of progress, namely between rich and poorer countries.

As climate negotiators prepare to work through the night in Copenhagen, the NewsHour asked several experts at the summit what they think can still be accomplished. Is there one thing that could still be accomplished at the summit that could…

Speaking to the Senate press corps Thursday, a group of Republican lawmakers offered a warning to the Obama administration that any long-term pledge of U.S. money for climate aid at the Copenhagen summit would need approval from Congress. Responding to…