#Ridges

Those ridges on the bottom of salt shakers aren’t decorative. They help improve grip, reduce moisture, and protect surfaces.

Going to make a loop in Shenandoah National Park in the end of May. I've driven once on the Skyline Dr and completed my 70.3 Ironman in Roanoke, VA - this is everything I know about the trails there.…

A recent deep-sea expedition off the coasts of Chile and Peru is revealing the secrets of a vast underwater mountain system — and could help make the case for future ocean protections there.

Ever noticed ridges on some coins? You're not alone. Why do some some U.S. coins have them, where do they came from, and are they still important?

NASA’s Curiosity rover is investigating strange spiderweb-like ridges on Mars that may reveal a hidden chapter of the planet’s watery history.