A new simulation video has sent shivers down spines, visually unpacking the disaster that could unfold if an asteroid plows ...

Donald Trump's repeated talk of annexing Canada is almost universally treated as a joke in Washington. Or, maybe, as a ...

The blast would have incinerated everything within 1.91 square miles. On October 23, 1961, the Soviet's conducted nuclear test #123 over Novaya Zemlya. Test #123 utilized a 12.5 megaton nuclear bomb.

The blast would have incinerated everything within 1.91 square miles. On October 23, 1961, the Soviets conducted nuclear test #123 over Novaya Zemlya. Test #123 used a 12.5 megaton nuclear bomb.

In normal times, a G7 and NATO leader accusing a U.S. president of craving annexation would be a headline-detonating, multi-megaton blast of news, leaving shock waves for months. These aren't ...

And all this came from a 1.4 megaton bomb. Tsar Bomba ... So, there would be no mushroom-shaped cloud and no subsequent blast wave or mass destruction. Instead, you'd get a blinding fireball ...

the Hiroshima blast rated 20 kilotons. The H-bomb, by comparison, is measured by the “megaton”—a million tons of TNT. The recent test H-bomb explosion had a force of 3.5 megatons.