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Gamma-Ray Burst Fingered for Carbon 14 Spike in A.D. 774

21 Jan 2013, 23:27 UTC
Gamma-Ray Burst Fingered for Carbon 14 Spike in A.D. 774
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The year is 774 A.D. A blast of energy from outer space hits Earth. No one alive then seems to have been aware of it. But the event was recorded--in the trees. Last year researchers announced that ...

-- Read more on ScientificAmerican.com

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