News

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.

Tech

Chameleon-like robot can change hue

Dye-filled microchannels help machine blend in, or stick out.