Mammoth problem found with extinction timeline

Precisely when mammoths went extinct has fascinated paleontologists for generations, perhaps because their decline coincided with the arrival of people to North and South America.

UN to agree on plan for 'historic' plastics treaty

More than 100 nations convening in Nairobi next week are expected to take the first steps toward establishing a historic global treaty to tackle the plastic crisis afflicting the planet.

Warming Arctic spurs battles for riches, shipping routes

From a distance, the northern shores of Baffin Island in the Arctic appear barren—a craggy world of snow-capped peaks and glaciers surrounded by a sea of floating ice even in the midst of summer.

Bird excrement may be cooling the Arctic

(Phys.org)—A team of researchers with members from Canada, Sweden and U.S. has found that bird excrement may be playing a role in cooling the Arctic during its warmer months. In their paper published in the journal Nature ...

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