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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Whew! At least it was twelve thousand years ago, so nothing like that could happen now!
Wait until DeBeers hears about THIS!
"Oh, honey, you shouldn't have!"
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.