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Extinction

One of the birds is known as A1, or ‘Hlow Hoo-let,’ which means “At last I (or we) fly!”

These California Condors Might Be Tending to the Species’ First Egg in the State’s Northern Region in More Than a Century

Experts haven’t confirmed the existence of an egg, but the nesting birds’ behaviors suggest one was laid in early February

Sue the T. rex is one of the largest and most complete skeletons of the species ever discovered. She's housed at the Field Museum in Chicago and was analyzed in this study along with three other specimens.

Like an ‘Eight-Ton Chicken,’ Tyrannosaurus Rex May Have Run on Its Tiptoes to Catch Speedy Prey

A new study suggests that the giant dinosaurs’ locomotion resembled that of modern-day birds

Researchers have produced hundreds of Galápagos tortoises genetically related to the extinct Floreana Island subspecies, thanks to a surprising discovery and captive breeding program.

Giant Tortoises Vanished From the Galápagos’ Floreana Island More Than 150 Years Ago. Now, Conservationists Have Brought Them Back

Researchers released captive-bred tortoises carrying the ancestry of the extinct local species

Spinosaurus mirabilis prowled around what is now Africa some 95 million years ago.

This Massive, Meat-Eating Dinosaur Was a ‘Hell Heron’ That Waded Into Shallow Waters to Nab Slippery Fish

Paleontologists unearthed a new species of Spinosaurus in the Sahara Desert in Niger, a discovery that adds to the debate over whether the prehistoric creatures were fully or semi-aquatic

The greater Bermuda land snail

Scientists Once Thought This Snail Was Extinct. But a Surprising Discovery and Decade-Long Conservation Effort Revived the Species

Conservationists have bred and released more than 100,000 greater Bermuda land snails

New life may have evolved surprisingly fast after a famous mass extinction event about 66 million years ago.

After the Dinosaur-Killing Asteroid Wrecked the Planet, Life May Have Bounced Back Surprisingly Fast

The steady rate of falling space dust helped researchers recalibrate the timeline

Megalodons were massive predators that ruled the world's oceans.

Megalodons Went Extinct Millions of Years Ago. The Prehistoric Predator Could Become Maryland’s Official State Shark

Teeth belonging to the fearsome creatures have been discovered throughout the state. Now, they’re up for consideration by the state legislature

Researchers have collected more than 50,000 fossil specimens from a quarry in southern China.

A Fossil Trove in China Provides a Rare Window Into a Mass Extinction Event That Happened More Than 500 Million Years Ago

Paleontologists have identified thousands of animal species that lived soon after the Cambrian explosion ended

Seven mummified cheetahs and the remains of dozens more were found in caves in northern Saudi Arabia.

Cool Finds

Mummified Cheetahs Discovered in Caves Could Help Saudi Arabia Bring the Wild Cat Back to Its Historical Range

Researchers thought that just one subspecies of cheetah lived in Saudi Arabia long ago. But an unexpected discovery seems to broaden the gene pool

A reconstruction of what Manipulonyx reshetovi may have looked like

This Dinosaur May Have Used Its Strange Clawed Hands to Pilfer and Pierce Eggs

A fresh analysis of a fossil found almost 50 years ago reveals a newly described genus named for its “manipulating claw”

The "Tumat puppies" were discovered with their fur, skin and stomach contents still intact.

Contents of a Wolf Pup’s Stomach From 14,400 Years Ago Are Teaching Researchers About the Lives of the Last Woolly Rhinos

Analysis of woolly rhinoceros DNA recovered from the permafrost-preserved wolf further hints that the Ice Age beasts went extinct because of a sudden shift in the climate

Strange fossils reveal that predatory fish with a wide array of dental setups once stalked prehistoric waters.

Sharklike Fish With Weird, Buzz-Saw Jaws Sliced Through the Seas, Then Vanished. Now, Paleontologists Are Unraveling Their Secrets

These “total monsters of fishes” are extinct today, though new clues about their lives come from CT scans and their closest living relatives: the big-eyed ratfish of the deep sea

Newly discovered species filled gaps in dinosaur evolution and shed light on historic migrations, while other studies offered new ways to date remains and made key insights about diets.

The Top Ten Dinosaur Discoveries of 2025, From Preserved Blood Vessels to the Return of a Short King

With studies of fossilized bones, gut contents, eggshells and more, paleontologists revealed new and captivating details about the enormous reptiles that once roamed the Earth

In 2025, researchers watched an interstellar comet, learned about human origins and traced the spread of measles.

The Ten Most Significant Science Stories of 2025, From Medical Breakthroughs to an Interstellar Visitor

All year long, these moments captivated the public, demonstrated dangerous trends, and pushed research and innovation forward

The growth plates, known as specimens UAMN3760 and UAMN3724, were discovered near Fairbanks in the early 1950s.

Mysteriously Young ‘Mammoth’ Fossils Discovered in Alaska Turned Out to Be Whale Bones

When researchers learned the fossils were merely 1,900 to 2,700 years old—which would be the youngest woolly mammoth fossils ever found—they suspected something was amiss

An illustration of ancient sea cows

A Trove of Sea Cow Fossils in Qatar Reveals a New Species That Munched on Seagrass 21 Million Years Ago

The findings suggest that sea cows have been engineering ecosystems in the Persian Gulf for tens of millions of years

Modern-day crocodiles like this one arrived in Australia about 3.8 million years ago. But a distant branch of them that lived there tens of millions of years ago included some members that dropped from trees onto prey. 

Paleontologists Unearthed Australia’s Oldest Known Crocodile Eggshells. The Reptiles’ Relatives May Have Hunted From the Trees

The eggshells belonged to an extinct group of crocs, some members of which were “drop crocs” that plunged onto prey

Eastern hellbenders are known as "snot otters" because they're covered in a slimy, protective coating.

Scientists Are Releasing the Lovingly Nicknamed ‘Snot Otters’ Into Ohio Waterways in a Big Success for Conservation

Eastern hellbenders, the largest amphibians in North America, are in trouble, but conservationists are hard at work to help the wrinkled wonders survive

A spiny-tailed iguana on Clarion Island

Iguanas Are Native, Not Invasive, on This Mexican Island, DNA Study Suggests, Rewriting Conservation Ideas

The spiny-tailed iguanas of Clarion Island predate human presence in the Americas by tens of thousands of years, researchers say

Epiatheracerium itjilik lived in a forested lake habitat on Devon Island 23 million years ago. 

Scientists Discover ‘Frosty’ Polar Rhino That Roamed the Canadian Arctic 23 Million Years Ago

The newly identified species was small, hornless and possibly covered in fur, which would have helped it survive dark, cold winters above the Arctic Circle

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