Geology

The longer a structure has been exposed to the water, the more weathered it appeared.

This "Lost Underwater City" Was Actually Made by Microbes

Though these formations may not be evidence of a lost city, they show off some intriguing chemistry

Yellowstone's Grand Prismatic Spring is the largest hot spring in the park. But what gives it its vivid rainbow colors?

The Science Behind Yellowstone's Rainbow Hot Spring

The Grand Prismatic Spring might seem photoshopped, but there's very real science beneath its vibrant colors

A 2.7-billion-year-old micrometeorite extracted from limestone found in the Pilbara region of Western Australia.

Ancient Spacedust Reveals Surprising Twist in Evolution of Earth’s Early Atmosphere

Mini fossil meteorites are providing new insights about how our ancient atmosphere evolved into its current state

What Caused the 2011 D.C. Earthquake?

A thinning mantle led to the 5.8 magnitude shake in the Southeast, and more may be in store

The Hale Crater on Mars, one area where slope lineae occur

Boiling Water Could Explain Mysterious Dark Streaks on Mars

Researchers simulate some of the Red Planet's unique features in an Earth-bound chamber

Water spreads like inky-blue fingers into mangrove forests along the shore of Australia's Ord River (top). The sediment load in the water shows up as yellow and orange while mudflats stick out like a light blue bull's-eye on the lower left.

These Stunning Satellite Images Turn Earth Into Art

These images illustrate the brutal beauty geologic processes carve into our planet

New USGS Map Shows Man-Made Earthquakes Are on the Rise

This updated earthquake hazard map shows seven million more Americans are at risk of quakes

A passenger aboard a commercial flight to Anchorage, AK snapped this picture of the volcano in action.

Alaska’s Most Active Volcano Is at It Again

Pavlof Volcano spews ash 20,000 feet into the air, and scientists warn pilots to steer clear

The Bisti Badlands in northern New Mexico is known for its Easter egg-like rock formations.

These Massive Rock Formations Look Just Like Cracked Eggs

Bisti Badlands’ bizarre eggs bring a bit of Easter to the New Mexico desert

Volcanic activity in the moon billions of years ago may have caused its poles to shift.

Ancient Volcanoes May Have Shifted the Moon’s Poles

Ice deposits point to the moon’s old poles

What Are You Flying Over? This App Will Tell You

Flyover Country uses maps and geology databases to identify features of the landscape as a plane flies over them, no Wifi necessary

An artist's rendering of the sweltering surface of Venus.

A Giant Planetary Smashup May Have Turned Venus Hot and Hellish

A collision with a large object may have triggered changes deep inside the planet that ultimately affected its atmosphere

The Matterhorn is perhaps the most recognizable of the peaks that make up the Alps, and has a height of 14,692 feet.

Seven Surprising Facts About the Matterhorn

The towering peak that straddles Switzerland and Italy is full of secrets

Martian Volcanoes Spewed So Much Lava That the Planet’s Surface Shifted

Volcanic upheaval could explain some of the mysteries of Mars’ strange surface

Coober Pedy's Serbian Orthodox Church—owned by the Diocese of Australia and New Zealand—is just one of the city's otherworldly underground buildings.

Half of the Inhabitants of This Australian Opal Capital Live Underground

Unearth Coober Pedy, the Outback's hidden city

An artist's rendering of Chicxulub, the asteroid believed to have wiped out large dinosaurs and reshaped parts of the world.

We Finally Know How Much the Dino-Killing Asteroid Reshaped Earth

The impact that wiped out large dinosaurs also dumped hundreds of feet of debris in the ocean off the Yucatán peninsula

Meteorites embedded in ice sheets that run into the Transantarctic mountains can work their way to the surface, making it easier for scientists to collect these fragmented space rocks.

Iron Meteorites Play Hide-and-Seek Under Antarctic Ice

Meteorites give scientists a glimpse into our early solar system, but the sun's rays and melting ice may make these extraterestrial crumbs harder to find

Journey to the Center of Earth

Drill deep into the mysteries of our home planet, from the surface all the way down to the core

Are We Living in the Plastic Age?

Scientists argue that this material may best define our current period within the Anthropocene

Fossilized microbial mats, or stromatolites are one of the oldest fossils found on Earth. This one lurked in shallow waters 3.4 billion years ago.

Life and Rocks May Have Co-Evolved on Earth

A Carnegie geologist makes the case that minerals have evolved over time and may have helped spark life

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