Physics
Suspicious quake gives away North Korea’s third nuke
The magnitude-4.9 earthquake was probably due to a 10-kiloton underground nuclear bomb; the next step is to monitor for signs of radioactive gas
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The magnitude-4.9 earthquake was probably due to a 10-kiloton underground nuclear bomb; the next step is to monitor for signs of radioactive gas
Conflicting evidence of North Korean activity in 2010 forces us to ask if monitoring systems are good enough to make a test-ban treaty enforceable