As U.S. turns its back on security commitments, Germany faces one of the most profound shifts in its post-war defense policy. Can it still rely on nuclear guarantees from France and UK? Or is it time ...

Since the first nuclear explosion in history during the Trinity test in 1945, nuclear weapons have significantly shaped the ...

Scientists have been building nuclear weapons for more than 80 years, but crafting this technology remains a challenge.

Powering spacecraft with solar energy may not seem like a challenge, given how intense the sun's light can feel on Earth.

In anyone’s nuclear language, this is a respectable amount of plutonium, and with it France can turn out an estimated twelve atomic bombs a year, in the 20-200 kiloton range. By the end of 1961 ...

Britain’s Trident nuclear missiles are the backbone of its nuclear force. The problem? Britain doesn’t even own the missiles—they lease them from the United States.

A wildlife corridor plans to connect two Superfund sites at the former Rocky Flats plutonium plant and the Rocky Mountain ...