Issues

By combining laser cooling with cavity quantum electrodynamics, researchers have created a laser that works through repeated emission from a single atom.

The varied and striking colors of Pavo muticus males arise from differences in the details of nanoscale photonic lattices.

Natural variations in isotope ratios show up in tooth enamel and can reveal where a person—even an ancient Maya king—spent his earliest years.

Astronomers in Hawaii and beyond hope that NASA’s environmental impact statement will be a first step toward improving relations with opponents of new telescopes on Mauna Kea—and will bode well for astronomy’s future in Hawaii.

The US Department of Energy’s Office of Science required that each proposed facility have a projected cost of at least $50 million, and then assessed each based on the importance of the science it addresses and its readiness to move forward.

Donald Kerr has been involved in many scientific endeavours—from studying plasma physics to managing a network of forensics laboratories. Now, he faces the daily challenge of keeping the Central Intelligence Agency’s technology one step ahead of the US’s adversaries.

An American Physical Society study concludes that disabling ICBMs before they release their munitions would be very difficult at best and, in some cases, impractical.

To advance economically and technologically, many African nations need to simultaneously develop a culture of physics and a supporting infrastructure.

Intrinsic localized modes have been theoretical constructs for more than a decade. Only recently have they been observed in physical systems as distinct as charge-transfer solids, Josephson junctions, photonic structures, and micromechanical oscillator arrays.