Featured in rocks
Ancient rocks hold the story of Earth’s first breath of oxygen
The Great Oxygenation Event may have happened all at once, around 2.3 billion years ago.
Meet the ‘Spy Stone,’ a Russian robot disguised as a rock
The prototype can move around and transmit audio and video, too.
6 geology games for kids who take rocks for granite
It's up to you to come up with more rock puns, though.
How minerals and rocks reflect rainbows, glow in the dark, and otherwise blow your mind
Nature's imperfections make a feast for the eyes.
Glacier-dwelling bacteria thrive on chemical energy derived from rocks and water
Who needs sunlight? Not these microbes.
Welcome to Earth, home to human-sized salamanders and skin-eating worms
Celebrate Earth Day with some truly bizarre facts about our world.
The best bouldering accessories for your first rock climbing trip
A chalk bag, a crash pad, and more.
Dragonglass is real, even if white walkers (hopefully) aren’t
Megapixels: 'Game of Thrones' turns a naturally-occurring glass into a fantastical weapon.
Megapixels: Asteroid Bennu is …exploding?
New images reveal peculiar behavior from the celestial object
Ancient poop is helping archaeologists understand a midwestern city’s demise
The forensic feces files