ScienceScientists detect prolonged, unexpected seismic activity at North Korea’s nuclear test site

Scientists say seismic activity at North Korea’s sprawling Punggye-ri nuclear test site has risen unexpectedly and for an extended period since the country conducted its final and most powerful nuclear test in 2017.

North KoreaPunggye-rinuclear test siteseismic activity

CCNN★★★☆☆2026-09-17 19:31Original