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Requiem for the Younger Dryas impact hypothesis?

This is the strong conclusion of a new paper in the Earth Science Reviews by Pinter et al. From their abstract: The Younger Dryas (YD) impact hypothesis is a recent theory that suggests that a cometary or meteoritic body or bodies hit and/or exploded over North America 12,900 years ago, causing the YD climate episode, [...]
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Vitamin B3 might have been made in space, delivered to Earth by meteorites

Academics / General Science : Science Codex (37 minutes ago)

Ancient Earth might have had an extraterrestrial supply of vitamin B3 delivered by carbon-rich meteorites, according to a new analysis by NASA-funded researchers. The result supports a theory that the origin of life may have been as... Read Post

New evidence supporting extraterrestrial impact in Younger Dryas

Academics / General Science : Watts Up With That? (2 years ago)

There’s a new paper in PNAS worth having a look at. It seems the authors found some very strong evidence for a comet or asteroid impact during the period known as the Younger Dryas. According to Wikipedia: The Younger Dryas … Contin... Read Post

The Younger Dryas comet-impact hypothesis: gem of an idea or fool’s gold?

Issues & Causes / Climate Change : RealClimate (5 years ago)

There was a paper in Science last week that has gotten quite a bit of press. It reports further evidence in support of the idea that the Younger Dryas — a distinct period towards the end of the last ice age when the deglaciation in ... Read Post

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