Geology

The earthquake on March 27, 1964, dropped Anchorage’s Fourth Avenue and some cars on it roughly 20 feet below normal.

How the Great Alaska Earthquake Shook Up Science

Sixty years ago, the largest earthquake in U.S. history shocked geologists. It’s still driving scientific discoveries today

The Nesjavellir Geothermal Power Station. Geothermal power has long been popular in volcanic countries like Iceland, where hot water bubbles from the ground.

Is Geothermal Power Heating Up as an Energy Source?

Long confined to regions with volcanic activity, the method of harnessing energy from the Earth promises to become much more versatile thanks to new technologies

The incident took place on the popular Redstone Trail in Nevada's Lake Mead National Recreation Area.

Two Vandals at Lake Mead Toppled Rock Formations Made From 140-Million-Year-Old Dunes

Authorities are seeking information about the men, whose crime was captured on video on April 7

Piles of coal sit in front of a power plant in Utah. Such coal-fired power plants emit greenhouse gases that drive climate change.

What Myths About the Anthropocene Get Wrong

These ten misconceptions underplay how much we have altered the global environment and undermine the new perspective we need to deal with a drastically changed world

Observations of volcanic vortex rings have been reported at a number of volcanoes over the past several hundred years. The most recent rings emerging from Etna were first spotted last Wednesday.

Mount Etna Puffs 'Smoke Rings' Into the Sky

The circular wisps are mostly condensed water vapor

Melting ice redistributes mass to Earth's equator, slowing its spin rate. Changes in Earth's spin affect its synchronization with atomic clocks.

Melting Polar Ice Sheets Are Slowing Earth's Rotation. That Could Change How We Keep Time

As ice melts into water and flows toward the equator, it redistributes mass around the Earth, affecting the planet's spin, a new study finds

Lava erupts from a nearly two-mile-long fissure on Iceland's Reykjanes Peninsula in the fourth eruption for the region since December.

Iceland Volcano Spews Lava in Fourth and Most Powerful Eruption in Three Months

Officials detected signs of an eruption only 40 minutes before fountains of lava burst from the ground

Mars' orbit has an impact on Earth's oceans and climate in cycles of 2.4 million years, new research finds.

Mars Has an Unexpected Influence on Earth's Oceans and Climate, Repeating Every 2.4 Million Years, Study Finds

The gravitational interactions between Mars and Earth as they orbit the sun may have periodically promoted a warmer climate and changes in ocean circulation on our home planet

Scientists conduct sampling at Crawford Lake in Ontario, Canada, in April 2023. Last summer, a working group chose the lake as a representative location for the influence of human activity on the planet due to the history recorded in its sediment.

Scientists Reject Proposal to Define the Anthropocene, a Geological Age Marked by Human Activity

Experts had suggested a new epoch started in the mid-20th century, but the recent vote demonstrates how tough it is to pinpoint when humans' impact on the planet began

Scientists studied the Lala Lallia star dune in the Sahara Desert in eastern Morocco.

Scientists Unravel the Mysteries of Earth's Towering Star Dunes—Massive, Moving Mountains of Sand

Using new technologies, researchers revealed an enormous star dune in Morocco formed more quickly than thought, and it's on the move

Cinnabar powder covered the remains of 20 people, mostly women, in this megalithic tomb at the site of Valencina, Spain.

Ancient Iberians Ingested Red Dust Loaded With Mind-Altering Mercury

Bones in Spain suggest a mercury-rich mineral used for art and hallucinogenic trips poisoned a community 5,000 years ago

A volcanic eruption moves toward the outskirts of the evacuated town of Grindavik on Iceland’s Reykjanes Peninsula.

Iceland's Recent Volcanic Eruptions Are Unleashing Deep Secrets

Each dramatic episode over the past few years has led to fresh geologic revelations, and researchers think another bout is on the way

People watch Thursday's volcanic eruption in Iceland. The Icelandic Meteorological Office said Friday afternoon local time that there were no more signs of eruptive activity.

Iceland Volcano Erupts Again, Cutting Off Hot Water From Towns and Spewing Fountains of Lava

This marks the third eruption since December in a region that, prior to 2021, hadn't seen volcanic activity for centuries

This small, bucolic waterfall in Western New York has one highly photogenic feature: a grotto lit by a dancing orange flame.

Seven Natural Phenomena Worth Traveling For

You need to be in the right place at the right time to see these celestial and earthly wonders

A church with a red roof and steeple sticks out against the sprawling landscape as the sun pokes through the hazy clouds.

Get an Eyeful of Iceland in These 15 Photos That Capture Its Natural Beauty

These selections from the Smithsonian magazine photo contest will transport you to the small Scandinavian island

The mineral-rich soak at Chena Hot Springs, about 60 miles northeast of Fairbanks, has been attracting tourists since the early 1900s.

You Can Soak in These Eight Hot Springs in Alaska

From resorts to remote spots, natural thermal waters throughout the state beckon tourists

Returning Rapids Project investigator Chris Benson examines old photos of the Colorado River to see how it has changed over time.

Citizen Scientists Document a Recovering Colorado River

The Returning Rapids Project charts a resurgent waterway and its surrounding ecosystems

The 7.46-carat brown diamond is about the size of a gumdrop.

French Tourist Finds 7.46-Carat Diamond at Arkansas State Park

Julien Navas plans to have the brown gem split into two pieces so he can give half to his fiancée and half to his daughter

Ocean drainage basins of the world

These Entrancing Maps Capture Where the World's Rivers Go

Cartographer Robert Szucs uses satellite data to make stunning art that shows which oceans waterways empty into

Costa Rica's Arenal volcano spews geysers of lava, ash and toxic gases

Why Central American Volcanoes Are Ideal for Studying Earth's Evolution

The volcanic arc extending from Mexico to Costa Rica expels a variety of magma types that make for a geological paradise

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