Mars Was Covered In Deep Oceans. Then ‘Something Catastrophic’ Happened, Say Scientists

Why Do We Slow Down When We Are Sick? Scientists Identify the Cells Responsible

More than a year and a half after its first flight on Mars, the Ingenuity helicopter has set a new record. The little 4-pound (1.8-kilogram) chopper completed its 35th flight on December 3 and reached a new altitude record of 46 feet (14 meters).

NASA Scientists Map Global Salt Marsh Losses and Their Carbon Impact