Cat owners whose cats had more of a bonding hormone felt fewer bad moods, hinting at a link between cats and people.

Earth and Mars may have formed through very different processes, despite developing as neighbors in the early solar system.

Talk therapy for depression during pregnancy helped mothers and was linked to small changes in their babies’ brains.

Scientists thickened Arctic sea ice by pumping seawater onto its surface, but questions remain about summer melting and large ...

A new optical frequency comb uses two lasers and a tiny chip to simplify precision measurements, opening a path toward smaller atomic clocks.

Green snow algae on the Antarctic Peninsula held ten times the phosphate of red snow, and penguin guano is the likely source ...

An AI assistant's gender changed how much workers gave it, and the female-looking version got about 14% less despite ...

Researchers examine how cities can weigh public values against the risks and benefits of emerging technologies.

Mud from a fjord shows an Atlantic air pattern brought wetter, colder spells to southern Greenland, a clue to how its ice may ...

Scans of 24 adults found the brain's face and voice areas each carry the other's emotional signal, and three regions use one ...

New research reveals that molten rock can absorb far more oxygen than expected, potentially helping explain how Earth's ...

A new ESA satellite image reveals vast stretches of Antarctic sea ice, with enormous ice floes and swirling patterns near the ...