Nuclear bombs do not rely on size, they rely on physics. Here is how chain reactions and hydrogen bombs unleash power on a ...

The First Quebec Conference, 1943: (clockwise from top left) Mr Mackenzie King, Winston Churchill, Alexander Cambridge, Earl of Athlone, and President Roosevelt - Bettmann Manhattan, Mayson, Maud. One ...

It's been just about 80 years since President Truman told the nation, August 6, 1945... (SOUNDBITE OF ARCHIVED RECORDING) HARRY S TRUMAN: A short time ago, an American airplane dropped one bomb on ...

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 ...

America’s last nuclear detonation was nothing special. Smaller than the bomb that killed 73,000 people in Nagasaki, it exploded 1,397 feet below the Nevada desert. It shook the ground, created a ...

The 80th anniversary of the atomic bombing of Hiroshima and Nagasaki is this week. It was the only time nuclear warheads were used during war. Here’s a look at the history and current U.S. stockpile.

Tick. Tick. Tick. Eighty years ago this month, the doomsday clock jolted to life. Nothing was the same after Aug. 6, 1945. On that date, the first of two American atomic bombs went off in Hiroshima, ...

This week marks 80 years since the US dropped atomic bombs on Hiroshima and Nagasaki — killing an estimated 200,000 people. Historian Garrett Graff’s new book “The Devil Reached Toward the Sky” draws ...

HARRY S TRUMAN: A short time ago, an American airplane dropped one bomb on Hiroshima and destroyed its usefulness to the enemy. That bomb has more power than 20,000 tons of TNT. SIMON: It was an ...