Citizen scientists have taken photos of this boulder every year for three decades. In 1990, a scientist began visually documenting Prince William Sound’s recovery from the Exxon Valdez oil spill.

Two huge boulders sent tumbling by a landslide narrowly missed a farmhouse in Ronchi di Termeno in northern Italy on January 21, 2014. The above photo, taken two days later, shows one of the ...

The question “How did perfectly round boulders end up on a beach in New Zealand?” has a fascinating answer rooted in geology.Around 60 million years ago, sediments made up of mud, clay, and ...