Issues

The planet and its moon distort each other, with consequences for lo’s volcanic activity and the orbits of Jupiter’s other moons.

Two groups have harnessed subnanosecond intensity fluctuations to produce unpredictable binary sequences.

Bursts signaling the collapse of stars more than 13 billion years ago should elucidate early star formation and the cosmic reionization it engendered.

In Moscow, the two leaders reaffirmed commitments to curb proliferation, but differences remain over the US plan for a missile shield in Europe.

Republicans warn that curbs on greenhouse gas will worsen recession.

What began as a prediction about electron diffusion has spawned a rich variety of theories and experiments on the nature of the metal–insulator transition and the behavior of waves—from electromagnetic to seismic—in complex materials.

To study localized matter waves, two experimental groups hold a Bose–Einstein condensate in the grip of a disordered but tunable optical potential formed by interfering laser beams.

For 22 years ceramic oxides of copper seemed to offer the only way to reach high-temperature superconductivity. Now, a new and unexpected route is being charted: through semimetal compounds of iron.

Scientists at the National Ignition Facility plan to generate fusion energy and study fusion in nuclear weapons. But the starlike conditions that NIF creates will also enable them to study astrophysically important nuclear reactions.