At the end of the Pleistocene period, approximately 12,800 years ago—give or take a few centuries—a cosmic impact triggered an abrupt cooling episode that earth scientists refer to as the Younger Dryas.
Earth Sciences
Jul 27, 2015
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Rock soil droplets formed by heating most likely came from Stone Age house fires and not from a disastrous cosmic impact 12,900 years ago, according to new research from the University of California, Davis. The study, of ...
Archaeology
Jan 6, 2015
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A new study published in The Journal of Geology provides support for the theory that a cosmic impact event over North America some 13,000 years ago caused a major period of climate change known as the Younger Dryas stadial, ...
Earth Sciences
Sep 11, 2014
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Most of North America's megafauna—mastodons, short-faced bears, giant ground sloths, saber-toothed cats and American camels and horses—disappeared close to 13,000 years ago at the end of the Pleistocene period. The cause ...
Earth Sciences
Aug 27, 2014
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About 12,800 years ago when the Earth was warming and emerging from the last ice age, a dramatic and anomalous event occurred that abruptly reversed climatic conditions back to near-glacial state. According to James Kennett, ...
Earth Sciences
May 21, 2013
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Life on our planet appeared early in Earth's history. Surprisingly early, since in its early youth our planet didn't have much of the chemical ingredients necessary for life to evolve. Since prebiotic chemicals such as sugars ...
Astrobiology
Feb 26, 2024
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Micrometeoroid strikes are an unavoidable aspect of operating any spacecraft, which routinely sustain many impacts over the course of long and productive science missions in space. Between May 23 and 25, NASA's James Webb ...
Space Exploration
Jun 8, 2022
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Just less than 13,000 years ago, the climate cooled for a short while in many parts of the world, especially in the northern hemisphere. We know this because of what has been found in ice cores drilled in Greenland, as well ...
Earth Sciences
Oct 2, 2019
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