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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

Megan Gannon

Fruit grows on a native avocado tree in southern Mexico

Ancient Genes Reveal That Big, Bright Avocados Were Carried Through the Americas Thousands of Years Ago

Known as Yowjab to Indigenous Australians, the inshore reef covers about 100,000 acres.

For Three Hours Every Day, Open Ocean Transforms Into Australia’s ‘Ghost’ Reef

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

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

Kiana Hall, a 33-year-old marketing specialist, captured a viral clip of Jimothy while out for a walk in Seattle's Ballard neighborhood.

An Unusual-Looking Raccoon Nicknamed Jimothy Is Winning Hearts Across the Internet for His Short, Round Body

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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

Fruit grows on a native avocado tree in southern Mexico

Ancient Genes Reveal That Big, Bright Avocados Were Carried Through the Americas Thousands of Years Ago

People brought large avocado seeds from South America to Central America, kicking off a burst of diversity for the fruit

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

Known as Yowjab to Indigenous Australians, the inshore reef covers about 100,000 acres.

For Three Hours Every Day, Open Ocean Transforms Into Australia’s ‘Ghost’ Reef

An isolated wonder some 1,200 miles from the nearest city, Montgomery Reef disappears as quickly as it appears, mirroring the supposed vanishing of its original owners, a tribe of Indigenous giants

Ammonites swam in the Western Interior Seaway that once covered a large portion of North America. These iridescent fossils from South Dakota, around 69–72 million years old, preserve inner shell layers made of aragonite, the same mineral that gives pearls their luster.

An Ancient Sea Once Split North America Down the Middle. The Beautiful Multicolored Ammonite Shells From Its Waters Are So Perfectly Preserved That They Still Shimmer Today

Spectacular marine fossils tell the story of the long-gone Western Interior Seaway and the planet’s past aquatic life

To turn shrimp shells into a feedstock for hydrogen gas production, the process begins with mashing the shells into a rust-colored shrimp slurry.

How Shrimp Shells Are Being Turned Into ‘Carbon Negative’ Fuel, Food and Construction Materials

Engineers in Singapore have developed a new, multistep chemical process that transforms organic waste into useful, sustainable products

Interstellar object 3I/ATLAS, imaged here with its broad coma of gas and dust, has captivated astronomers since its discovery on July 1, 2025.

A Rare Comet Made History as the Third Known Interstellar Object to Fly Through Our Solar System. Studies Are Now Revealing the Mysterious Conditions in Which It Formed

In the latest research, telescope observations of 3I/ATLAS examine its chemical structure and suggest that it took shape in a peripheral region of a relatively calm planetary system

A North Atlantic right whale swims with dolphins around its head in the Stellwagen Bank National Marine Sanctuary east of Boston.

Speed Limits for Ships Protect Endangered Right Whales From Vessel Strikes. Could the Animals Survive Without Them?

Since 2008, rules requiring ships to slow down to avoid collisions with North Atlantic right whales have reduced fatalities of the critically endangered animals. Now, NOAA is calling the regulations into question, raising concerns for the mammals’ future

Cells suspended in a water-based gel make up the “ink” in this 3D printer.

Can Printed ‘Skin’ Heal Burns and Prevent Scars?

Inks created with a patient’s own cells may one day help the body regrow tissues

Two fossils of juvenile embolomeres—crocodile-like creatures, illustrated here—suggest that they did not undergo metamorphosis to become adults and that the ancestors of today’s birds, mammals, reptiles and amphibians might not have had a tadpole life phase.

A Vietnam Veteran Collected Fossils for 66 Years. One, Mislabeled ‘Baby Lamprey,’ Made Paleontologists Reconsider How Vertebrates Moved From Water to Land

The fossil turned out to be a hatchling of a crocodile-like creature, and it suggests, according to a new study, that early animals did not use metamorphosis to evolve to dwell on land

Slow-healing wounds, especially in diabetics and burn victims, can become infected with antibiotic-resistant bacteria. Light-activated nanomaterials offer a potential new way to clear the infection and accelerate wound healing.

Scientists Are Using Nanomaterials to Heal Stubborn Wounds That Resist Antibiotic Treatment

Light-activated therapies may offer a solution to slow-healing lesions common in diabetics and burn victims

Lightning strikes in Peckham, Oklahoma.

America at 250: The Revolutionary Spark

When a Team of Meteorologists and Combat Pilots Set Out to Understand Thunderstorms, They Made Flying Safer for Everyone

The sky was a very dangerous place in the early days of commercial aviation. By flying into storms to learn how they worked, these experts made air travel and weather forecasting much more predictable

Director Steven Spielberg on the set of Disclosure Day, his latest UFO-inspired film

What’s Behind Steven Spielberg’s Lifelong Obsession With Flying Saucers and Extraterrestrial Visitors?

Half a century after “Close Encounters of the Third Kind,” the director returns to the subject of UFOs with “Disclosure Day.” His science fiction films are informed by his fascination with alien encounters in American suburbia

The “Ether Dome” at Massachusetts General Hospital is now a National Historic Landmark.

America at 250: The Revolutionary Spark

The Operating Room Where Anesthesia Was First Demonstrated Is Now a Landmark. But for the Men Who Claimed Credit, There Was Much Misery

Medical procedures used to be a scream-filled endurance test until doctors at this Boston institution learned to tame the pain of patients

A swan swims on the Scharmützelsee at sunrise on July 2, 2025, when temperatures in the nearby German cities of Berlin and Brandenberg were expected to hit 102 degrees Fahrenheit.

‘Stupid Hot’: Heat Waves Muddle the Minds of Animals and Humans as Confusion and Aggression Seem to Rise With the Temperature

Wide-ranging research suggests that as temperatures increase, some creatures pick fights while others struggle to learn. The findings hint at consequences that may ripple through ecosystems

By combining ecological data-gathering with philosophical contemplation, Leopold bridged the art and science of conservation.

America at 250: The Revolutionary Spark

In the Early 1900s, a Young Ecologist Shot a Wolf and Watched the Life Leave Its Eyes. That Changed His Position on Conservation

Aldo Leopold’s writing reconsidered the place of humans in the natural world and challenged people to be less conquerors of the land and more citizens of it

An illustration of all 726 solar systems depicting planets confirmed as of October 30, 2018, the end of Kepler’s life span. The colors represent each planet’s temperature, ranging from chilly dark blue to fiery red. The mission yielded so much data that scientists are still announcing new planets years later.

America at 250: The Revolutionary Spark

A Blip on a Telescope in a Colorado Parking Lot Bolstered a Space Mission That Has Found Thousands of Planets … and Counting

The Kepler telescope changed how we saw the sky. It’s just one of the devices we’ve sent out beyond the reach of humans to search our solar system

Two giraffes cross in elegant symmetry beneath a radiant sunset.

You’re Guaranteed to Spot at Least One Gorgeous Giraffe in Each of These 15 Stunning and Awe-Inspiring Images

With their singular coats, naturally craning collars and elegant gait, these skyscraping mammals can’t help but attract sightseers to their neck of the woods

Enormous dinosaurs like the Brachiosaurus in this illustration evolved multiple times over millions of years.

What Was the Biggest Dinosaur? Fragmentary Fossils Make It Hard to Tell

Pinning down the most titanic of the large sauropod dinosaurs is not an easy task, since the odds were generally against the biggest ones being buried and preserved

Rhys Ifans (standing in second row) as the chief designer in "Star City," a spinoff of Apple TV's "For All Mankind" 

Based on a True Story

Soviet Cosmonauts Trained at Star City as They Raced to Beat America to the Moon. Now, a New TV Series Imagines What Happened Behind the Base’s Walls

Apple TV’s “Star City” takes place in a world where the space race never came to an end. A spinoff of “For All Mankind,” the show is told from the Soviet perspective

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