A candlelight message in front of the A-Bomb Dome in Hiroshima on Jan. 22 when the Treaty on the Prohibition of Nuclear Weapons took effect (Jun Ueda)
Japanese college students are answering the call from atomic bomb survivors to carry on their fight to get Japan and other nations to sign the U.N. treaty banning nuclear weapons.
The Treaty on the Prohibition of Nuclear Weapons took effect on Jan. 22, but Japan, the only nation to have atomic bombs dropped on it during war, has not signed it.
Hibakusha have long called for the elimination of nuclear weapons, but as the victims of the 1945 atomic bombings of Hiroshima and Nagasaki are now in their twilight years, they have often voiced fear that no one will carry on their cause after they re gone.