New research reveals Stone Age foragers in Africa traveled miles to collect colorful stones, showing early trade, taste, and symbolism.

MUNISING, MI – The best and most colorful way to see Pictured Rocks National Lakeshore is from the waters of Lake Superior. Spring water from deep underground presses up through the face of the ...

That’s because obsidian is pretty unstable as far as rocks go; over time, the silica molecules within it end up rearranging into a more organized fashion, a process known as devitrification.

WILLIAMSPORT, Pa. -- If you've taken a walk through downtown Williamsport recently, it's likely you have passed one of many colorful rocks without even noticing. Hand-painted and purposely placed ...

Colorful rocks have been painted and then hidden in parks around West Orange, New Jersey. It is part of the Kindness Rocks Project, a national idea that has exploded on social media.