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 explosion over Russia, but this time, it wasn't a nuclear test. Instead, the sensors picked up short-frequency sound waves from the Chelyabinsk meteor blas...
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 explosion over Russia, but this time, it wasn't a nuclear test. Instead, the sensors picked up short-frequency sound waves from the Chelyabinsk meteor blas...
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