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Climate summit: The crunch issues

On November 30, some 120 heads of government and state will kick off a high-stakes negotiation to curb global warming and help poor countries cope with its impacts.

dateNov 17, 2015 in Environment
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Risk assessment, for the birds

Every year, backyard songbirds across the United States make an arduous journey to warmer winter climes. They migrate hundreds of miles, occasionally braving tough terrain and nasty weather. Sometimes, they have no place ...

dateNov 02, 2015 in Ecology
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