Ukraine has struck again near Putin’s hometown of St. Petersburg, triggering a massive ammunition depot explosion that created a fireball visible from space. After drones penetrated Russian air ...

Watch how the first atomic bomb test unfolded, as scientists pushed the limits of physics in a race to end the war. Behind the scenes, there were real fears that the explosion could trigger a chain ...

Here’s what you’ll learn when you read this story: The 1945 Trinity nuclear test fused desert sand and bomb-tower materials into trinitite—a glassy substance unlike anything humans had created before.