News

Planetary Science

Mars rover fails to find methane

A dearth of the gas in the Red Planet's atmosphere disappoints scientists looking for signs of biological activity.

Animals

Tiger, lion and domestic cat genes not so different

Genomes of big felines provide insight into their evolution.

Psychology

Poker pros’ arms betray their hands

Top players' arm motions when betting provide clues to whether or not they hold strong cards.

Tech

Bacterial batteries get a solid boost

Using microbes to harvest energy from wastewater now has a silver lining, with the metal making reliable, rechargeable batteries.