Scientists recorded 1,399 local quakes since North Korea began its underground nuclear tests—a spike unlike anything the ...

It’s been almost 10 years since North Korea last conducted an underground thermonuclear test at the mountain, which is also known as Mantapsan—yet the geology of the site appears to have been ...

Between 2006 and 2017, North Korea conducted six underground nuclear tests at its vast testing site at Mount Mantap in North Hamgyong province. Typically, underground explosions trigger an intense ...

Seismic activity has increased around North Korea’s Punggye-ri nuclear test site since the country’s last and most powerful ...

North Korea's nuclear tests may have triggered years of earthquake activity around Mount Mantap, its main nuclear test site, ...

A new study has found that North Korea may have triggered a rise in earthquakes near its main nuclear test site after its ...

Unusual earthquake activity detected at site of former North Korea nuclear facility - Study suggests nuclear testing ...

North Korea’s six underground nuclear tests may have done more than produce short-lived tremors.