The original version of this story appeared in Quanta Magazine. It is late at night. You are alone and wandering empty streets in search of your parked car when you hear footsteps creeping up from ...

Like a highway system, the vagus nerve branches profusely from your brain through your organs to marshal bodily functions, including aspects of mind such as mood, pleasure and fear. It is late at ...

It's sort of unsettling to think that our body paralyzes itself during sleep, but that is essentially what happens for large portions of the night when your body's getting the sleep it needs. You've ...

Hormones coordinate different body functions by carrying messages through the bloodstream to target cells and tissues. Hormonal imbalances occur through inadequate or excess hormone synthesis, which ...

Add Yahoo as a preferred source to see more of our stories on Google. (Nes/Getty Images) Those who have never endured the relentless ringing of tinnitus can only dream of the torment. In fact, a bad ...