Archive

The circadian clock is in nearly every cell, and researchers have untangled many of its secrets. But sleep has been harder to pin down.

Can balloon animals help blunt uneasy feelings about “spooky action at a distance”?

Powerful new experiments have uncovered some of the molecular underpinnings of sleep.

The simple Möbius strip illustrates a deep mathematical challenge that has long tormented the field of symplectic geometry.

When two mathematicians raised pointed questions about a classic proof that no one really understood, they ignited a years-long debate about how much could be trusted in a new kind of geometry.

Physicists are closing the door on an intriguing loophole around the quantum phenomenon Einstein called “spooky action at a distance.”

The ancient Greeks argued that the best life was filled with beauty, truth, justice, play and love. The mathematician Francis Su knows just where to find them.

Scientists are uncovering how our bodies — and everything within them — tell right from left.

When do negative results from a half-life experiment mean a theory is dead?