New techniques expose unexpected diversity within seemingly uniform tissues.

A California housewife who in the 1970s discovered four new types of tessellating pentagons is dead at 94.

Big advances in math can happen when mathematicians move ideas into areas where they seem like they shouldn’t belong.

Breathless media coverage notwithstanding, the cases for and against a hypothetical Planet Nine in the outskirts of the solar system remain inconclusive.

The newly developed theory of emergent gravity, proposed as an alternative to dark matter, struggles in one of its first trials.

Does the force of gravity change at large scales? Perhaps not, but a new theory of dark matter shows why that could appear to be the case.

The legendary marine biologist discusses why she’s excited about the coming era of ocean science, the shortsightedness of maritime exploitation and diving in the Arctic in her 80s.

Paul Erdős placed small bounties on hundreds of unsolved math problems. Over the past 20 years, only a handful have been claimed.

The Advanced Laser Interferometer Gravitational-Wave Observatory’s third detection further compounds the mystery of why black holes collide.

To assess the ocean’s health, ecology’s “rugged individualists” learned to get with the big data program.

Juggling has advanced enormously in recent decades, thanks in part to the mathematical study of possible patterns.

A new paper claims that a common digital security system could be tweaked to withstand attacks even from a powerful quantum computer.

A system of seven Earth-like exoplanets appeared to be unstable. Now their orbits have been rewritten in the music of the spheres.

Ramsey’s theorem predicts a surprising (and useful) consistency in the organization of graphs. Here’s a simple visual proof of how it works.

To avoid garbled messages, mathematicians might translate them into geometric form.

Physicists are attempting to map the distribution of the prime numbers to the energy levels of a particular quantum system.