Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.

Nuclear weapons tests are among the most violent events humans can trigger, and that violence leaves fingerprints in the ...

Scientists from around the world gathered in Hiroshima in November with the aim of charting a path toward a world free of ...

A subsurface atomic test near Yucca Flats, Nev., in March 1955. (U.S. Atomic Energy Commission via AP) In what would be a major shift in a decades-old American policy against global nuclear ...

Japan’s long-standing status as a non-nuclear power is under fresh scrutiny after a report argued that the country could ...

A Pakistani official told CBS News that the country "will not be the first to resume nuclear tests" in response to President Trump's assertion in an interview with 60 Minutes that the country has ...

In the 80 years since World War II, which ended with the use of two atomic bombs, the world has maintained a tenuous relationship with nuclear weapons. Philip Potter, professor of public policy at the ...

President Donald Trump has called for the United States to test its nuclear weapons for the first time in three decades. But Trump’s statements about testing — in particular, whether other nations are ...

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China's Foreign Ministry responded on Monday to President Trump's assertion that Beijing has conducted clandestine nuclear weapons testing with a flat denial. "China's testing 'em too," Mr. Trump told ...