During the ‘Great Dying,’ This Saber-Toothed Predator Reigned
This ancestor of mammals briefly thrived amid a massive extinction event, hinting at how carnivores may respond to climate change today
Pets Will Soon Be Welcome at More Than 120 Archaeological Sites in Greece
The new policies won’t apply at certain high-traffic destinations like the Acropolis
Orcas Are Ramming Into Ships Off Europe’s Coast
One researcher says this may be a response to a “critical moment of agony” a female orca experienced with a boat
Rare ‘Technicolor’ Rainbow Sea Slug Found in England
It’s only the fourth record of the species in the U.K., and experts say it’s a sign of warming waters due to climate change
Older Dogs With Dementia Sleep Poorly—Just Like Humans
The findings may help veterinarians and pet parents identify canine cognitive decline
Comb Jellies May Be the World’s Oldest Animal Group
A new study suggests that ancestors of comb jellies, not sponges, were the first to break off from the common ancestor of all animals
See 15 Breathtaking Shots From the Close-Up Photographer of the Year Challenge
This themed contest rewarded minimalism, with clean photographs of insects, spiders and plants earning accolades
See Tables Crafted From Human Tissue, a Toad With Eggs on Its Back and More at This London Museum
The newly reopened Hunterian Museum acknowledges the ethical quandaries posed by its collection of anatomical specimens
Platypuses Return to Australia’s Oldest National Park
The egg-laying mammals haven’t been seen at the site since the 1970s, but scientists hope the newly released creatures can re-establish a population
Hammerhead Sharks Can ‘Hold Their Breath,’ A First for Fish
The sharks close their gills to stay warm while hunting in deep, frigid waters, new research suggests
Ancient DNA Reveals Who Wore This 20,000-Year-Old Pendant
Researchers have found a new way to extract human DNA from porous artifacts
This Trove of Fossils in Wales Is Revealing Secrets of Early Animal Life
Scientists have uncovered 170 species from around 462 million years ago, unveiling surprises about when tiny marine creatures evolved and disappeared
Beatrix Potter Was a Keen Observer of the Natural World
Famous for “Peter Rabbit,” the children’s author was also a devoted scientist and conservationist
Watch Whales Exfoliate Their Skin on the Ocean Floor
Migrating humpbacks used sand and rubble to slough off dead skin and barnacles, a behavior that may be both practical and social
Why Male California Sea Lions Are Getting Bigger
The “raccoons of the sea” have varied diets, allowing them to grow large to compete for mates
Scientists Reintroduce 5,000 Snails to French Polynesian Islands
The project’s organizers say it’s the largest-ever release of creatures that are extinct in the wild
The Gruesome Ways Volcanoes Kill Fish
Whether the eruption is underwater or on land, the creatures don’t have an easy time dealing with nature’s fury
Twenty Endangered California Condors Die Amid Avian Flu Outbreak
Scientists fear the deaths could set back the slow-breeding birds’ recovery by at least a decade
The World’s Newest National Park Protects 550-Million-Year-Old Fossils
The 148,000-acre Nilpena Ediacara National Park in South Australia is helping scientists unravel the mysteries of life’s evolution on Earth
First Lion Spotted in Chad National Park in 20 Years Is ‘Beautiful’ and ‘Healthy’
A trail camera snapped a photograph of the lounging big cat, giving wildlife officials renewed hope about the species’ recovery in West and Central Africa
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