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An artistic rendering shows the mysterious animal, which researchers now say was a nautilus relative, in its prehistoric environment.

This Fossil Held the World Record for the Earliest Known Octopus. Turns Out, It’s Not an Octopus After All

New research suggests the 300-million-year-old specimen is actually a relative of the nautilus

The Mekong giant catfish is an endangered freshwater species.

Freshwater Fish Migrations Are Disappearing Across the Planet, Finds U.N. Report

The assessment identified over 300 species of fish that urgently need international conservation effort

Cow sharks (one shown) and frilled sharks are members of the newly proposed lineage.

What Is a Shark? A New Genetic Analysis Throws an ‘Unexpected Wrench’ Into Our Understanding of the Ocean Predators

Some shark species might belong to their own distinct lineage, which is separate from all other sharks, rays and skates, according to a new study

An illustration of the fossils' environment around 539 million to 554 million years ago

Cool Finds

New Fossils Discovered in China Hint That Complex Life Evolved Millions of Years Earlier Than Scientists Thought

The assemblage suggests that the ancestors of some of today’s animal groups may have arisen before the famed Cambrian explosion

Earth, partially illuminated, appears over the moon’s horizon at 6:41 p.m. Eastern time on Monday—just three minutes before the Artemis 2 astronauts reached the far side of the moon, initiating a communications blackout with NASA’s teams on the ground.

See the Awe-Inspiring New Photos of the Moon and Earth Sent Back From the Artemis 2 Mission

The astronauts are on their way home after looping around the moon on a historic flyby. Here are the dazzling images they captured

Tobacco plants make a lot of the amino acid tryptophan, the basis of many psychoactive compounds.

Scientists Engineered Tobacco Plants to Produce Five Mind-Altering Psychedelic Compounds

The substances have been used by Indigenous peoples for thousands of years, but they’ve recently become popular as possible therapeutics for mental health conditions

Becoming an expert birder might support brain health, according to a new study.

Becoming an Expert Birder Can Reshape Your Brain and Might Help Protect It From Aging, New Research Suggests

Compared with novices, seasoned birders had denser, more structurally complex brain regions involved with tasks like object identification, visual processing, attention and working memory

A violent, swirling storm on Jupiter captured by NASA's Juno spacecraft

Lightning Strikes on Jupiter Are 100 Times as Powerful as Those on Earth, a New Study Suggests

Scientists finally have a clearer picture of the gas giant’s intense storms

The American woodcock has been migrating through the New York City area for, probably, millennia. But in recent years, the bird’s fame has skyrocketed.

These Rotund and ‘Charmingly Goofy’ Birds Are Delighting New Yorkers and Dancing on Social Media. What Is the American Woodcock?

The endearing animals make a pit stop in Bryant Park during their migrations to northern breeding grounds, gathering fans and starring in viral videos

Researchers stimulated digital replicas of the patients' hearts with electrical signals to locate the sources of their irregular heartbeats.

Doctors Used ‘Digital Twins’ of Patients’ Hearts to Fix Their Irregular Heartbeats

A small clinical trial suggests the technology can help physicians perform life-saving surgeries more efficiently and safely

The Artemis 2 crew reported an issue with the toilet shortly after takeoff.

Artemis Astronauts Overcome Toilet Trouble and Officially Head Toward the Moon

Houston, we have a potty problem

In a first for small-brained animals, the study found that bumble bees can keep track of a beat even as it speeds up and down. 

Despite Their Tiny Brains, Bumblebees Have a Surprising Sense of Rhythm, According to a New Study by Neuroscientists

By speeding up the tempo of alternating flashing lights, the scientists were able to demonstrate yet another example of the small insect’s remarkable mind

Domino the warty frogfish is about the size of a pea.

Meet Domino, a Tiny, Bumpy Fish Making a Splash in Chicago

The warty frogfish, also known as a clown anglerfish, is believed to be the first of its kind born and raised in captivity

NASA astronaut Mike Fincke on January 15, when SpaceX Crew-11 splashed down, roughly one month ahead of schedule.

An Astronaut’s Sudden Inability to Speak Prompted the ISS’s First Medical Evacuation. Doctors Still Don’t Know What Caused the Issue

The individual who fell ill, NASA’s Mike Fincke, says the medical team is almost certain that the issue was related to being in space

Megachelicerax cousteaui and a close-up of one of its pincers, or chelicerae

This 500-Million-Year-Old Fossil of a Claw-Bearing Predator Uncovers the Origins of Spiders, Scorpions and Other Arthropods

A new analysis of a specimen found more than 40 years ago reveals the oldest known chelicerate, defined by its pair of pincer-like appendages

An artist's concept of comet 41P as it approached the sun, turning some of its ice into gaseous jets

In a First, an Astronomer May Have Witnessed a Comet Stop Its Spin—Then Reverse Its Rotation

Archival images snapped by the Hubble Space Telescope revealed the unusual event

Bruce Jayne, a biologist at the University of Cincinnati, co-authored the new paper, which examined the locomotive abilities of three brown tree snakes (like the one pictured here) and a scrub python.

How Do Snakes ‘Stand’ Upright Nearly Stick-Straight? New Research Points to How They Pull Off the Gravity-Defying Feat

These clever creatures seem to concentrate their muscle activity near their bases, which helps them cross gaps between tree branches in the wild

Artemis 2 will take four astronauts around the moon.

NASA’s Artemis 2 Mission Launches, Sending Humans Toward the Moon for the First Time in More Than 50 Years

Four astronauts have begun a ten-day mission in which they’ll loop around the moon, laying the groundwork to put humans on the lunar surface as early as 2028

Male reproductive cells, sperm, might struggle to reach and fertilize female reproductive cells, eggs, in microgravity, according to a new study.

Humans Might Struggle to Make Babies in Space. Sperm Gets Disoriented in Microgravity, a New Study Suggests

Simulated near-weightless conditions reduced human sperm’s navigational abilities

A new study is the first to “pinpoint which fragrances were actually burned in Pompeian domestic cult practices,” archaeologist Johannes Eber says.

What Did Ancient Pompeians Burn as Offerings to Their Gods? New Research Reveals the Surprising Answer

An analysis of incense burners discovered in the doomed city identified traces of resin imported from sub-Saharan Africa or Asia, testifying to Pompeii’s extensive trade networks

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