Nagasaki marks 80th anniversary of atomic bombing; survivors push for nuclear abolition.

Nagasaki marked the 80th anniversary of the U.S. atomic bombing, with around 70,000 people killed in 1945. Survivors, now averaging 86 years old, are working to abolish nuclear weapons and are digitizing their stories to educate younger generations. The Japanese government's refusal to sign the Treaty on the Prohibition of Nuclear Weapons frustrates the survivors. The ceremony at Nagasaki Peace Park drew nearly 3,000 attendees from 95 countries, though China did not attend without giving a reason.