As global tensions rise, a horrifying simulation paints a vivid picture of the devastation wrought by a nuclear explosion, ...

Preventing Iran's Nuclear Checkmate. ... extended its "breakout time"—the time it would take for Iran to be capable of producing enough fissile material for a nuclear bomb—to several years.

As an example, you can use the model to estimate what would happen to the largest cities in the U.S. if a nuclear bomb as powerful as the infamous "Tsar Bomba" was detonated on them.

An illustration of the shockwave of a 750-kt nuclear bomb 10 seconds after detonation. The wave has already traveled 2.8 miles (4.6 km). I.

The security architecture dissuading countries from growing and pursuing their own nuclear weapons is collapsing.

That nuclear bomb had a maximum yield equivalent to 360 kilotons of TNT, roughly 24 times the explosive power of the 15-kiloton bomb that the U.S. dropped on Hiroshima, Japan, during World War II.

If you survive the explosion, the first thing to do is to get inside, preferably underground — just doing that can reduce exposure by a factor of 10, experts say. Timing is also key.

The US government has uploaded 62 newly declassified nuclear-explosion videos to YouTube. The footage is a small share of the 10,000 Cold War-era films that archivists and physicists are trying to ...

We rate the claim that footage of nuclear explosions proves "nukes are fake" False. Read About Our Process The Principles of the Truth-O-Meter Our Sources. Tweet (archived version), July 4, 2023 ...