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5:00 PM | February 21, 2013
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Infrasound Array This was one of the infrasound arrays in Greenland that detected the Chelyabinsk meteorite on Friday. CTBTO, via wikimedia commons Last week was a busy one for the Comprehensive Test Ban Treaty Organization, a detection agency set up to identify nations when they test nuclear weapons banned by treaty. On Tuesday, the organization's seismographs detected a rumble in North Korea that could only have been an atomic test. Then on Friday, CTBTO infrasound sensors picked up an […]

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