Hiroshima-Nagasaki Bombing Videos
MOAB fallout from US Afghanistan strike
Afghan commandos assess the damage and search for information in the province that was attacked.
NASA Spacecraft Set to Explore Giant Asteroid That Could Destroy Earth
The OSIRIS-REx Mission, headed by NASA and the University of Arizona, plan to launch an unmanned spacecraft on September 8 in the efforts to reach Bennu, a large near-Earth asteroid in August 2018, according to a website devoted to the mission.
This Week in History: July 31-August 6
ABC News' Jonathan Karl looks back at great moments in history, politics and pop culture.
President Obama Hugs Survivor of Hiroshima Bombing
The president visited the Hiroshima Peace Memorial to mourn the Japanese, Korean and American victims of the world's first atomic blast in World War II.
President Obama Makes History in Hiroshima
Obama became the first sitting president to travel to Hiroshima since the U.S. dropped an atomic bomb there in 1945.
President Obama in Hiroshima : 'Death Fell From the Sky'
After laying a wreath at the Hiroshima Peace Memorial, President Obama mourned the Japanese, Korean and American victims of the world's first atomic blast in World War II.
Obama Attends G-7 Summit
The President is in Japan with other world leaders to discuss terrorism, maritime security and the global economy.
Obama Wraps Up Vietnam Trip
President Obama connects with Vietnamese youth at a town hall meeting and listens to one young woman rap while he beat-boxed.
ARCHIVAL VIDEO: Hiroshima , 50 Years Later
Never in recorded history have so many people died in one single horror filled instant. Fifty years ago today the crew of the N Oleg gay dropped a new and fearsome bomb they called little boy. Over the Japanese city of Hiroshima. The scientists who created the first atomic bomb knew it would cause
ARCHIVAL VIDEO: Hiroshima Survivors Work to Keep Their Memories Alive, Long After They're Gone
Aug. 4, 1995: Hiroshima survivors ensure their stories are passed on to future generations.