Abundant tiny particles of diamond dust exist in sediments dating to 12,900 years ago at six North American sites, adding strong evidence for Earth's impact with a rare swarm of carbon-and-water-rich comets or carbonaceous chondrites, reports a nine-member scientific team.
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More on the 12.9 k impact
Posted on: January 2, 2009 8:40 AM, by Greg Laden
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Comments
Whew! At least it was twelve thousand years ago, so nothing like that could happen now!
Posted by: george.w | January 2, 2009 10:57 AM
Wait until DeBeers hears about THIS!
Posted by: Mike | January 2, 2009 11:13 AM
"Oh, honey, you shouldn't have!"
Posted by: george.w | January 2, 2009 11:21 AM
Well, at least this story is better than the coverage on CNN, which doesn't name anyone from the article and mistakenly places it in Nature rather than Science. Yeesh.
Posted by: Tim | January 2, 2009 2:47 PM