Humans sleep less than every other primate on record, despite having the biggest brains — biologists call it the human sleep ...

With this wider view, Samson builds a complex argument about human sleep. He argues it’s a big part of what makes us human.

Sleep is often treated as a casualty of modern life. Artificial lighting, shift work, endless notifications and late-night ...

On dry nights, the San hunter-gatherers of Namibia often sleep under the stars. They have no electric lights or new Netflix releases keeping them awake. Yet when they rise in the morning, they haven’t ...

Add Yahoo as a preferred source to see more of our stories on Google. A painting of a woman waking up. The wild thing about Ekirch’s study was that the evidence of biphasic sleep was staring us in the ...

Add Yahoo as a preferred source to see more of our stories on Google. Author David Samson has climbed trees to study chimpanzee nests in his quest to understand how human sleep evolved. - Bill McGrew ...

For millennia, philosophers have argued over why humans sleep and dream. In his fourth-century-bc treatise On Sleep and Sleeplessness, the philosopher Aristotle argued that sleep is a necessary, ...

Experts advise that adults should sleep for around eight uninterrupted hours in a cool, dark room. If you do so consistently, they say, you can add years to your life. It’s an ideal many people fail ...