What's up in

New work shows that neurons and other brain cells use DNA double-strand breaks, often associated with cancer, neurodegeneration and aging, to quickly express genes related to learning and memory.

The most widely used technique for finding the largest or smallest values of a math function turns out to be a fundamentally difficult computational problem.

The unambiguous discovery of a Wigner crystal relied on a novel technique for probing the insides of complex materials.

The mechanism behind leopard spots and zebra stripes also appears to explain the patterned growth of a bismuth crystal, extending Alan Turing’s 1952 idea to the atomic scale.

Brown dwarfs such as “The Accident” are illuminating the murky borderlands that separate planets from stars.

By focusing on relationships between solutions to polynomial equations, rather than the exact solutions themselves, Évariste Galois changed the course of modern mathematics.

Mathematicians using the computer program Lean have verified the accuracy of a difficult theorem at the cutting edge of research mathematics.

Theorists are in a frenzy over “fractons,” bizarre, but potentially useful, hypothetical particles that can only move in combination with one another.

Scientists have reported large DNA structures in some archaea that defy easy categorization.