Issues

Whether you look at relics from three minutes after the Big Bang or from 400 000 years later, you find the same meager value for the cosmic abundance of ordinary matter.

With a single parameter as a tiller, surface scientists can steer a model catalyst away from chaos toward regimes of regular, repeating behavior.

Researchers have found a way to make a BEC that is quicker, possibly simpler—and applicable to a wider variety of atoms.

Solid acids can have high proton conductivities. Recent experiments demonstrate that they may be sufficiently stable to form the core of new, higher efficiency fuel cells.

Word of mouth is the best bet for scrounging scientific equipment.

Lax controls on nuclear materials and a thriving black market are alarming officials.

Rapid x-ray characterization of structure and innovative ways of initiating and controlling reactions are shedding new light on protein function by enabling the visualization of macromolecules in action.

Atomic-resolution imaging techniques show that a good deal of surface physics can be understood with elementary statistical mechanics, but some surprisingly complex behaviors occur even in simple systems.

John Bardeen, the leading condensed matter theorist of his day, was quite wrong when he dismissed a startling prediction by the unknown Brian Josephson.