Where El Niño may impact California coastal areas this winter

Driving across Highway 37 in the San Francisco Bay Area on the best of days already feels like driving on top of water. Buffeted on both sides by marshlands hosting egrets, herons, ducks and a handful of endangered species, ...

The ambiguous costs of climate change

As human activity has increased temperatures globally, determining the costs directly incurred by climate change is challenging. The effects of climate change on extreme weather events—such as hurricanes and heat waves—can ...

Record El Niño? Depends who's counting

Britain's Met Office says this year's El Niño is "unprecedented." Japan's weather agency has called it the strongest ever observed. U.S. forecasters say it still trails the biggest events in its record books.

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