The begging of the nuclear age at the end of World War II happened, in large part, due to fears that Germany would detonate an atomic bomb first. See how the United States pushed itself to become the world's first nuclear power.
The last manned mission to the moon was almost a half-century ago in 1972, when Cold War-era tensions underscored President John F. Kennedy’s push to prove technologies that landed the first humans on the lunar surface.
In October 1957, a beach-ball sized metal globe hurtled through space a couple hundred miles above the United States. That orb was the first artificial Earth satellite — Sputnik. Sergei Khrushchev, former missile engineer and son of Soviet premier Nikita Khrushchev, remembers the US-Soviet race into space.
Fifty years ago, astronauts Neil Armstrong and Buzz Aldrin landed the Apollo Lunar Module and took their first steps on the Moon. Hundreds of millions of people around the world watched history taking place. You've probably seen the famous pictures, but here are some lesser-known facts about the historic mission.
Most of the world's heat waves are getting more intense, says meteorologist Geert Jan van Oldenborgh. "What is surprising is the rate of increase in heat waves — [which is] much faster than we expected."
Northern Chile is one of the few places in the world on Tuesday that experienced a total solar eclipse. The country prides itself on being an astronomer's paradise and the solar phenomenon vent drew visitors from all over the world.