Led by Johns Hopkins University scientists, the study shows the potential consequences of mishandling and misinterpreting ...

A United States specialized military aircraft capable of detecting nuclear activities from the sky was spotted heading to the Indian Ocean for a possible air sampling mission. The U.S. Air Force ...

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.