UN climate talks chief pushes for rapid draft deal

The head of the UN climate summit pressed nations Friday to strike a deal as talks resumed after a break, with only four days left for negotiators to iron out differences over the fate of fossil fuels.

Understanding climate tipping points

As the planet warms, many parts of the Earth system are undergoing large-scale changes. Ice sheets are shrinking, sea levels are rising and coral reefs are dying off.

Why regional differences in global warming are critical

Tiny fossils in marine sediments verify that climate models provide accurate calculations of average ocean temperatures during the last glacial maximum around 20,000 years ago, but that the spatial distribution of simulated ...

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