Diamonds tell tale of comet that killed off the cavemen

Scientists will outline dramatic evidence this week that suggests a comet exploded over the Earth nearly 13,000 years ago, creating a hail of fireballs that set fire to most of the northern hemisphere.

Primitive Stone Age cultures were destroyed and populations of mammoths and other large land animals, such as the mastodon, were wiped out. The blast also caused a major bout of climatic cooling that lasted 1,000 years and seriously disrupted the ... Full Story »

Posted by Leo Romero
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Subjects: Sci/Tech
Topics: Biology
Member Tags: impactors, extinctions, ice age
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4.4
by Peter Henry - May. 20, 2007

Fantastic story of a "big picture" in science which might explain three different puzzles of the recent geologic past, near the end of the most recent ice age, 12,900 years ago. I love it when dramatic science stories make the cut and this is no exception. Who knows if the postulated theory (comet explosion) is the cause or not? Maybe it is, maybe not. That's the way of science.

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2.2
by Dale Penn - May. 20, 2007

This is basic reporting about a report yet to be issued. It lacks any real meat but alludes to a theory that will ultimately rise to acceptance within the scientific community or not. Time will tell. Until then it is just interesting conjecture.

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4.1
by Seabury Lyon - May. 20, 2007

Good brief overview of what may turn out to be of great importance in many branches of earth and social sciences. Leaves one eagerly awaiting more detail and analysis. It's also a good, factual story that reminds us there are other truly immense issues we must not go to sleep on.

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3.7
by Mark Monday - May. 20, 2007
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3.7
by Cynthia Gilbert - May. 21, 2007
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3.5
by Fabrice Florin - May. 20, 2007
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3.0
by Leo Romero - May. 20, 2007
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4.0
by David Stokely - May. 20, 2007
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4.2
by Jami Dwyer - May. 20, 2007

Certainly an interesting story, seemingly plausible. Article doesn't question what else might have caused the "microdiamonds" and whether they formed at the same time, but this may have been addressed by the scientists, and they admit it's work in progress.

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4.0
by Dave Finnigan - May. 20, 2007
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3.6
by Steven Raines - May. 20, 2007
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3.5
by Bill Russell - May. 20, 2007
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