Your biological internal clock is controlled in a small region of the brain called the hypothalamus. It regulates hormone ...

It was a small change, but a frightening one. Last month, the "Doomsday Clock" was moved up to 89 seconds, the closest the world has ever been to total annihilation. The Bulletin of Atomic ...

Sleep health experts say the human clock is harder to set than the digital version at bedside. The body operates on its own circadian rhythm, which can be thrown off by the change. As the BBC's ...