Seoul and Washington have agreed to begin talks about deploying the THAAD missile defense system in South Korea.
South Korea's Defense Ministry plans to deploy four more THAAD launchers in response to the North's growing missile threat.
The atomic age formally began at exactly 5:30 a.m. (Mountain Time) on July 16, 1945. At that moment the Manhattan Project...
On May 21, 1946, Dr. Louis Slotin suffered a fatal dose of radiation during an accident involving a nuclear bomb.
Air Force officials say a unit responsible for operating nuclear missiles has failed a safety and security inspection.