The military wanted to test the electromagnetic impacts of nuclear weapons in space. In 1962 they lit up the sky.

While the prospect of a nuclear bomb being dropped on New York City is decidedly slim, the simulation - created by expert ...

The U.S. hasn't tested a nuclear weapon in decades, and since the 1990s has used simulations and experiments to verify they're working properly. NPR was granted a rare look at how they do it.