Nearly all of the world’s nuclear firepower is concentrated in the hands of just two countries, a reality that shapes every ...

Eighty years ago, a weapon was used which would transform modern warfare and the entire world forever. Hiroshima, in Japan, was the target of the first ever nuclear weapon, dropped by the US Air Force ...

Alex Wellerstein joins WIRED to answer the internet's burning questions about nuclear science. Which nations have nuclear bombs? Who decides who gets to have nuclear warheads and who doesn't? Why were ...

Add Yahoo as a preferred source to see more of our stories on Google. A subsurface atomic test near Yucca Flats, Nev., in March 1955. (U.S. Atomic Energy Commission via AP) (U.S. Atomic Energy ...

With doomsday nuclear weapons the last remnant of Russia's superpower status, President Vladimir Putin is stepping up threats to use them against Western powers aiding Ukraine. (Photo by Alexander ...

President Donald Trump said this week that he wants the Defense Department to begin testing nuclear weapons "immediately," but experts say that's wishful thinking. The U.S. has only one location where ...

Recent events in Iran demonstrate that dropping “bunker buster” bombs on nuclear plants is not an ideal, or even necessarily effective, way to prevent proliferation. It is far preferable to prevent ...

The general rule with nuclear countries is that they are rational, namely that they realize that their use of nuclear weapons of any kind may escalate into mutually-assured destruction. But what ...