A “ cold shock” sounds unpromising, at least at first blush. Plunge into icy water, and, as you gasp for air, your heartbeat jumps, blood vessels constrict, stress hormones like cortisol, an ...

Rivers began pumping weathered material into the sea about a billion years after Earth formed, suggesting continents may have gotten an early start.

New research reveals ancient ripples on Mars, providing compelling evidence of long-lost lakes that once existed 3.7 billion ...

From early ocean dips to ice-cold polar plunges, cold-water immersion is increasingly popular among athletes and wellness ...