A horrifying video by researchers at Princeton University simulates how a nuclear war between the US and Russia might unfold, estimating that tens of millions would perish in the first 24 hours alone.

On July 16th, 1945, the United States conducted the world's first test of a nuclear weapon. Less than a month later, two bombs were dropped on the Japanese cities of Hiroshima and Nagasaki ...

More than 91 million people in Russia, the US, and NATO-allied countries might be killed or injured within three hours following a single "nuclear warning shot," according to a terrifying new ...