The oceans are mostly composed of warm salty water near the surface over cold, less salty water in the ocean depths. These two regions don't mix except in certain special areas, which creates a large ...

New research shows ancient tropical oceans once held more oxygen than cooler regions, reshaping where early life could ...

During the last ice age, the Atlantic Ocean's powerful current system remained active and continued to transport warm, salty ...

In subzero winds, hypothermia announces itself in small, easy-to-miss ways. Here’s what one Nat Geo Explorer does to combat it in some of the coldest places on Earth.

AHA scientific statement provides a framework for standardizing baseline and provocative invasive hemodynamic protocols in HF ...