Imagine the power of the bomb dropped on Hiroshima in 1945 and then multiply it by 670,000 times. Terrifying doesn't really ...

One of the most important projects of the 20th century was also one of the most daring and destructive, and it reshaped the ...

The National Nuclear Security Administration said development for a bomb 24 times more powerful than the one dropped on Hiroshima is ahead of schedule.

Brandon Williams, the nominee to lead the National Nuclear Security Administration, said he would recommend reliance on ...