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Geology

On Scotland's uninhabited island of Staffa, Fingal’s Cave is formed from tall basalt columns created by ancient volcanic activity.

Seven Places in Europe That Legends Say Were Built by Giants, Devils or Dragons

Bridges, mountains, caves and rock formations that seem impossible to explain become magnets for folklore

Mercury as seen by NASA’s MESSENGER spacecraft during a flyby in 2008, before it began orbiting the planet.

Mercury Has Wrinkles That Show It’s Shrinking. Now, Scientists Say the Planet Has Shriveled Far More Than Previously Thought

A new study suggests that our solar system’s smallest planet has shrunk by up to 30 percent since its birth roughly 4.5 billion years ago

An image of the crater captured by NASA’s Lunar Reconnaissance Orbiter on March 3, 2026.

The Moon Just Got a Massive New Crater That’s Wider Than Two End-to-End Football Fields. It’s a ‘Once-in-a-Lifetime Observation’

The impact crater was formed in 2024 when an object the size of a multistory building crashed into our lunar companion. The resulting divot is about 728 feet wide and 141 feet deep

Venus is one of only two planets in our solar system that lack a moon. (Mercury is the other.)

Billions of Years Ago, Venus May Have Had a Moon—Which the Planet Promptly Gobbled Up, Study Suggests

Scientists have puzzled over why the planet dubbed “Earth’s twin” doesn’t have a moon. Computer simulations hint that if Venus ever did have one, it probably would’ve cannibalized its companion

Williston Lake is the seventh-largest reservoir by volume in the world. 

A Lake in Canada Got a Mysterious New Island. Then, It Disappeared—and Now It’s Back

The floating forest appeared in a well-mapped reservoir in British Columbia. Its presence and vanishing act have puzzled locals and officials at the power utility that operates the lake, but other similar islands exist elsewhere

The new study examined Mars' gravitational field to infer its interior structure.

Mars’ Southern Half Is Weirdly Warm Underground. The ‘Thermal Anomaly’ Might Explain Why the Planet’s Hemispheres Look So Different

Researchers used a novel technique to figure out what’s going on inside the Red Planet. The work suggests that the interior of the southern hemisphere is hundreds of degrees hotter than that of the northern hemisphere and partially molten

Streets affected by the catastrophic floods are now covered in mud.

What Triggered the Devastating Floods in Nepal and Tibet, and Are We Due for More in the Future? Here’s What Scientists Know So Far

Natural hazards researchers suspect that a landslide involving a glacier triggered the event, and they say more could happen because of human-caused climate change

An estimated one million to two million petroglyphs are spread across the Burrup Peninsula and the Dampier Archipelago, in the Pilbara region of Western Australia.

Historical Pollution, Not Current Industrial Emissions, Damaged the World’s Largest and Oldest Collection of Ancient Rock Art, Study Suggests

Researchers say that past exposure to sulfur dioxide is likely to blame for the increased porosity of the Murujuga rock art created by the Ngarda-Ngarli people tens of thousands of years ago

A hunger stone along the banks of the Elbe River in Decin, a city in the Czech Republic

‘Hunger Stones’ Resurface in Europe, Bringing Centuries-Old Warnings Back Into View as Rivers Hit Historic Lows

As drought exposes stretches of riverbed in central Europe, markers carved by past generations to record low water levels are emerging once again

Researchers involved in the study collect samples at Blood Falls.

Why Does Antarctica’s Blood Falls Spew Ruby Red Water? Microbes Offer New Clues About the Geologic Feature’s Ancient Origins

The falls contain saltwater rich with iron, which oxidizes and turns red when exposed to air. A new study provides further evidence that the brine probably comes from ocean water trapped when flood waters retreated millions of years ago

A digital illustration of typical prokaryotes—cells that do not contain a nucleus. Bacteria and archaea are the two kinds of prokaryotes on Earth, and their ancestors were the first organisms to evolve.

A New Study Points to Two Origins of Life on Earth by Tracing Early Chemical Reactions in Single-Celled Organisms

The work challenges the assumption that all life descended from one free-living cell. Instead, it suggests that two microbial lineages, the bacteria and archaea, evolved independently from a primordial, nonliving ancestor

South America was home to the marsupial sabertooth, illustrated on the left, while North America was home to the smilodon, on the right. The species competed with each other after the Panamanian land bridge connected North and South America.

Ancient North American Mammals May Have Gathered in Mexico and Diversified Before Moving to South America, Priming Them to Thrive There

An analysis of fossils from the country hints that animals from the north stayed in a “holding pen” between seven million and ten million years ago. The timeline might help explain why so many South American mammals have North American ancestry, but not vice versa

Scientists propose that most creatures died within a couple of hours of the asteroid strike, not because of the following years-long global winter.

The Dino-Killing Asteroid Strike May Have Transformed Our Planet Into a Hellish Inferno, Charbroiling Most Creatures Within Hours

Based on computer simulations and geologic evidence, scientists propose that the deadly event may have caused global wildfires and trapped heat in the atmosphere, roasting any animal that couldn’t take cover fast enough

The sandstone blocks were photographed at the wreck site in the 1970s.

Australia’s Most Notorious Shipwreck Tells a Story of Murder, Slavery, Mutiny—and, Now, ‘Surprisingly Sophisticated’ Trade in the 17th Century

When the Dutch East India Company’s flagship “Batavia” sank in 1629, it went down with large, carved sandstone blocks in its hold. The stones are now shedding light on trade at the dawn of global capitalism

Finland's Lake Saimaa is 111 miles long, 87 miles wide, dotted by about 14,000 islands, pierced by dozens of narrow straits, and surrounded by sheltered bays perfect for ringed seal breeding.

Before Cultural and Natural Wonders Earn UNESCO World Heritage Status, They Are Put on a ‘Tentative’ List. Here Are Five Nominees Worth Visiting Now

Featuring more than 1,800 sites from 181 countries and territories, UNESCO’s tentative list is a treasure trove of lesser-known marvels

Mount Rainier, an active volcano about 60 miles away from Seattle, has sent fast-moving mudflows known as lahars down its slopes before. Scientists just calculated a date for the most recent one.

A Massive Flow of Rock and Mud Tumbled Down Mount Rainier Centuries Ago. Scientists Pinpointed Its Date to Better Understand the Volcano’s Complex Threats

In a recent study, researchers dated a historic lahar called the Electron Mudflow to the summer of 1507, establishing a way to determine when past geologic events around the Puget Sound occurred

An amateur astronomer thought he found an impact crater on Google Maps. Then, an expedition to the site confirmed that he was right.

Cool Finds

An Amateur Astronomer Using Google Maps Spotted a Strange Indentation. It Turned Out to Be a Meteorite Crater From 390 Million Years Ago

Scientists confirmed the astronomer’s suspicions with an expedition to the site in Quebec. The discovery offers a rare case of a reported new crater turning out to be real

Researchers observed seafloor movement at the Southeast Indian Ridge, denoted by the yellow line.

In a First, Scientists Witness the Seafloor Spread in Real Time, Giving Them a Rare Glimpse at a Mysterious Geologic Process

Across a matter of days in 2024, the seafloor in part of the Indian Ocean dropped by about 13 feet, and roughly 5.7 billion cubic feet of molten rock rose to the crust’s surface, according to a new study

Earth is currently experiencing an occurrence of the El Niño climate pattern.

Could We Mitigate Super El Niños by Artificially Changing the Climate? A New Study Indicates Yes

Researchers used computer models to see what would have happened had scientists caused marine cloud brightening in the face of strong past El Niños

Scientists analyzed about 25 years' worth of data from the Fram Strait, a passageway where the Arctic and Atlantic oceans meet.

The Arctic Ocean May Have Passed a Crucial Tipping Point That Could Harm Food Webs and Worsen Climate Change

Sea ice loss seems to have triggered a decline in the nutrient nitrate, affecting the tiny organisms that form the foundations of marine food chains and absorb atmospheric carbon dioxide, according to a new study

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