Scientists have discovered evidence that liquid water was once exposed to the air in ancient, shallow lakes on Mars. The ...

A tower of 100 empty plastic gallon jugs might seem an unlikely object in a museum exhibit. But the tower presents an effective monument, making the often invisible clear to see: the importance of ...

Symmetrical wave ripples identified with NASA’s Curiosity rover in ancient lake deposits at Gale crater provide a key paleoclimate constraint for early Mars: At the time of ripple formation, climate ...

Thinking of ripple effects allegorically awakens three different parts of my brain. One part thinks of the consequences of something that happens, and another part thinks of gently flowing water in ...

NASA’s Opportunity rover has demonstrated some rocks on Mars probably formed as deposits at the bottom of a body of gently flowing saltwater. “We think Opportunity is parked on what was once the ...