Three biologists argue that popular notions of a fungi-based system connecting trees may be wishful thinking.
An erupting volcano, a bald eagle squabble, and more are the honorees of NatGeo's annual picture contest.
The layer, located 100 miles below the Earth's surface, could help shed light on how the tectonic plates move.
Check out some award-winning imagery of our planet's most otherworldly display.
The impact created fast-moving waves nearly 3 miles high, a new study finds.
Every autumn, minerals are pitted against each other on Twitter for the chance to be crowned the best.
"If there was a one in six chance that my house was going to fall down in my lifetime, then I think I would do…
The newly discovered Nadir crater off the coast of Africa dates to the same time as the famous Chicxulub impact,…
New research has found that the islands' volcanic environments are filled with a surprising diversity of bacterial…
Earth Observatory's Image of the Day saw wildfires, flooding in Yellowstone, and phytoplankton blooms last month.
An English herbarium has stored a misidentified sample of the newly discovered species for the past 177 years.
Helium-3 is leaking from Earth, and it's an intriguing clue as to how our planet formed.
Distant features in Yellowstone National Park are connected by underground hydrothermal networks, new research…
Ice cores contain evidence of cataclysmic eruptions that would have affected humans around the world.
The 19-mile-wide, ice-covered hole is bigger than roughly 90% of all known impact craters on Earth.
Experts say the freak wave was a once-in-a-millennium event.