The Sundance Film Festival is Boulder bound, leaving its home of four decades in Park City, Utah, for a new chapter in neighboring Colorado.

Before hominins intentionally chipped stone to make tools, they likely used sharp rocks already shaped by natural forces.

Pale rocks on the red planet reveal a watery past and suggest the potential for life. Sometimes, scientists have to dig, work ...

Uluru, a World Heritage site in northern Australia, is renowned for its color-changing ability due to its sandstone ...

In a forest of the United Kingdom sits an ancient standing stone. For years, many believed the green-gray slab was just an “isolated monument,” but no one had investigated — until now. George Bird, a ...