News

Humans

Gene may boost effects of peer pressure

DNA trait linked to tendency to be affected by high or low levels of alcohol and cigarette use in high school.

Health & Medicine

Ovulation spurred by newfound semen ingredient

A common growth-boosting protein may act as a pregnancy-protecting hormone in humans.

Life

Unusual virus may tie snakes in knots

Captive snakes with a fatal disease harbor viruses never before seen in reptiles.

Chemistry

Supersmall lab-on-a-chip is superfast

Two-chamber nanowire device that quickly finds diagnostic molecules in blood could be a lifesaver.

Psychology

Psychopaths get time off for bad brains

In a survey, judges tended to say they would reduce sentences for criminals defended with biological evidence.