Sleep

Some animals’ babies physically relax when their parents whisk them away from danger. The same thing works for tiny, wailing humans.

Despite years of evidence that starting school later promotes better health and improved grades, too few schools have adopted this measure

The nervous and immune systems are tightly intertwined. Deciphering their chatter might help address many brain disorders and diseases

Letters to the editor for the April 2022 issue of Scientific American

Putting off sleep can have unfortunate consequences

Scientists are less enthusiastic than the U.S. Senate about DST year-round

Waking yourself from the twilight state just before sleep may help you to solve a challenging problem, a study shows

And the benefits of two four-minute sessions persisted for hours

Researchers demonstrate that during REM sleep, people can hear—and respond to—simple questions such as “What is eight minus six?”

Bee larvae and pupae appear to secrete a chemical that does the work of a late-night cup of coffee for their nurses.

Anxiety about social distancing and infection is altering how much we dream and the nature of our dreams themselves

Originally published in March 1880