The 80th anniversary of the atomic bombing of Hiroshima and Nagasaki is this week. It was the only time nuclear warheads were used during war. Here’s a look at the history and current U.S. stockpile.

When the first nuclear bomb test took place 80 years ago, the scientists who gathered to observe the explosion in the New Mexico desert recognized they were playing with fire. Physicist Enrico Fermi ...

Instead, high-energy radiation and electromagnetic pulses dominate, posing serious risks to satellites, spacecraft, and ...

When the first nuclear bomb test took place 80 years ago, the scientists who gathered to observe the explosion in the New Mexico desert recognized they were playing with fire. Physicist Enrico Fermi ...