North Korea’s last nuclear test triggered an earthquake Kim Hong-Ji/Reuters
North Korea鈥檚 nuclear weapons are about 10 times more powerful than the atomic bomb dropped on Hiroshima, satellite images suggest.
Leader Kim Jong-un recently聽pledged to suspend the country鈥檚 nuclear program, but little is known about its existing arsenal.
To search for clues,聽聽at Nanyang Technological University in Singapore and his colleagues studied German satellite images of North Korea鈥檚 Punggye-ri nuclear testing site at Mount Mantap. Six nuclear tests have been conducted inside this mountain since 2006.
They were particularly interested in the latest test,…
