News

Physics

Behold, the antilaser

Physicists describe a device that absorbs all incoming light.

Life

Noisy bacteria

Cell-by-cell analysis finds big differences among genetically identical cells.

Psychology

Sadness response strengthens with age

Older people reacted more strongly to sad scenes than twentysomethings did in a recent study of emotional receptivity.

Life

Lemurs on contraceptives don’t smell right

Birth control disrupts female odors used in mating and other social situations.

Earth

Trailing dust devils

Whirlwinds leave dark paths behind by sucking sand grains clean.