Comet from edge of solar system killed the dinosaurs: study

Sixty-six million years ago, a huge celestial object struck off the coast of what is now Mexico, triggering a catastrophic "impact winter" that eventually wiped out three-quarters of life on Earth, including the dinosaurs.

Geoscientists reconstruct 6.5 million years of sea level stands

The pressing concern posed by rising sea levels has created a critical need for scientists to precisely predict how quickly the oceans will rise in coming centuries. To gain insight into future ice sheet stability and sea-level ...

Motherhood does not drive support for gun control

Moms are not more likely than other women to support gun control efforts. In fact, a new study finds that parenthood doesn't have a substantial effect on the gun control views of men or women.

Skinnier but resilient geese thriving in the high Arctic

The world is changing in dramatic ways, especially in the High Arctic. Climate change has meant that spring arrives earlier, but winters have become far more treacherous for Arctic animals that overwinter there, with more ...

Climate models overestimate natural variability

By looking at satellite measurements of temperature changes in the lower layer of Earth's atmosphere, scientists found that climate models may have overestimated the decade-to-decade natural variability of temperature.

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