Insect damage on fossil leaf
November 13, 2017

Once at odds, a climate expert and botanist who studies ancient plants later teamed up to improve understanding of one of the warmest periods in Earth history. 

August 3, 2017

On July 30, a Finnish icebreaker set a new record for the earliest transit through the Northwest Passage.

July 11, 2017

Following a plateau in the early 2000s, global concentrations of the powerful greenhouse gas methane have hit new highs in recent years. Chemical fingerprint tests seem to rule out a major role for fossil fuels. With more than half a dozen possible natural and human sources, how will  scientists figure out where it's coming from? 

March 30, 2017

On the heels of 2016's devastating mass bleaching event at Australia's Great Barrier Reef, tourists and park managers are reporting thermal stress and mass bleaching again in early 2017.

March 23, 2017

Compared to their smooth appearance at other times of year, the lines tracking Arctic and Antarctic sea ice extent become wiggly. Why is that?

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