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Scientists now think humans settled South America in three waves.

A New Big Database of DNA From Indigenous Americans Shakes Up Scientists’ Theories About Human Settlement of South America

Genomic data provides evidence for a previously unknown wave of migration, with Indigenous groups living in central and southern Mexico spreading into South America and the Caribbean starting around 1,300 years ago

Comet 3I/ATLAS has much more "heavy" water than comets that formed in the solar system, according to a new study.

Interstellar Comet 3I/ATLAS Came From an Extremely Cold, Lonely Region of the Milky Way Galaxy, New Research Suggests

Astronomers analyzed the vapors coming off the comet when it neared the sun and found it had a lot of “heavy” water. That hints it grew up in a frigid planetary system, possibly before its home star formed

Illustration of the giant ancient octopus

Cool Finds

This Bone-Crunching Octopus Was Nearly the Size of a Semitruck and May Have Feasted on Giant Reptiles 100 Million Years Ago

The massive invertebrates may have been top predators, according to an analysis of their fossilized jaws. The work suggests that ancient oceans weren’t completely ruled by spine-bearing creatures, as previously thought

The two-toned lobster will go on display at the Woods Hole Science Aquarium when it reopens next year.

See the 1-in-50-Million Split-Color Lobster Caught Off the Coast of Massachusetts. It’s Carrying Two Sets of Genetic Information

The unusual-looking crustacean is two-toned, with a line dividing its body into an orange side and a brown side. This can happen when two fertilized, unlaid lobster eggs touch—causing one to absorb the other

New research indicates that Neanderthals had the genetic hardware for language.

Did Neanderthals Have Language? New Research Suggests They Had the Genetic Hardware for It, Like Humans

Specific genomic regions that seem to play a role in human language development evolved hundreds of thousands of years ago, before humans and Neanderthals diverged from a common ancestor, a new study finds

The federal government is reclassifying medical marijuana as a less dangerous drug.

State-Licensed Medical Marijuana Has Been Reclassified as a Less-Dangerous Drug. Here’s What That Means

The move should make it easier for researchers to study the substance and give tax breaks to licensed medical marijuana dealers

Mission engineers have shut down Voyager 1's Low-energy Charged Particles experiment.

To Keep the Voyager 1 Spacecraft on Its Interstellar Journey, NASA Turned Off One of Its Few Remaining Instruments

The probe launched almost 50 years ago and is the farthest human-made object from Earth. Shutting down one of its scientific devices will help it conserve energy and continue traveling toward the edge of the solar system

The researchers studied a wetland shaped by Eurasian beavers in Switzerland.

Beavers Are Ecosystem Engineers—and They Might Be Helpful Allies in the Fight Against Human-Caused Climate Change

New research suggests that wetlands created by the industrious rodents are carbon sinks, meaning they store a lot of heat-trapping carbon dioxide—the human-produced gas largely responsible for today’s global warming

After drilling a rock sample from a spot on Mars nicknamed “Mary Anning,” NASA’s Curiosity rover took this selfie on October 25, 2020. Now, that sample has revealed organic molecules that have never been seen on the red planet before.

A Mars Rover Found Building Blocks of Life Never Seen on the Red Planet Before, Boosting the Case for Ancient Habitability

The organic molecules discovered by NASA’s Curiosity rover could have been formed by life, but they could have also come from geologic processes or meteorites

The monkeys sometimes steal food from tourists.

Gibraltar’s Famous Monkeys Are Eating Dirt, Likely to Alleviate Stomach Aches From Munching on Tourists’ Junk Food

The British territory’s Barbary macaques are the only wild monkeys in Europe. But many are consuming human snacks high in calories, sugar, salt and dairy, and low in fiber

A camera set up by the conservation organization Panthera captured a healthy male jaguar in the Sierra del Merendón mountain range.

A Rare ‘Cloud Jaguar’ Was Spotted in Honduran Mountains for the First Time in a Decade, Representing a Win for Conservationists

The big cats are rarely seen at high elevations, so the sighting suggests that efforts to protect a wildlife corridor in the region are working

In experiments, juvenile Atlantic salmon that were exposed to cocaine’s primary metabolite swam more and dispersed farther than their sober peers.

Cocaine Pollution Seems to Make Salmon Swim Farther Than Usual. Scientists Don’t Know the Long-Term Consequences

The illegal drug’s main byproduct, benzoylecgonine, caused more robust effects than cocaine itself. Wastewater treatment plants often don’t fully process such metabolites, so they are frequently found in bodies of water at higher concentrations than their parent drugs

The winner ran the half-marathon in 50 minutes and 26 seconds.

A Humanoid Robot Just Beat the Human World Record for the Fastest Half-Marathon During a Race in China

A self-navigating robot called Lightning, developed by Chinese electronics company Honor, won the 13.1-mile race. Its results and others mark significant advancements since last year’s inaugural event, where only 6 of the 21 androids reached the finish line

Natural selection has been playing a bigger role in changing modern human DNA than previously thought, according to a new study.

Humans Are Still Evolving. Natural Selection Has Favored Genes Linked to Red Hair and Less Male-Pattern Baldness, a Study Suggests

A massive study of ancient and modern DNA from thousands of West Eurasian people has identified nearly 500 genetic variants that evolution has selected for or against in recent history

The researchers studied neural activity in 16 participants with epilepsy who had electrodes in their brains.

We Use Many of the Same Brain Cells to See and to Imagine Objects, a Study Suggests. The Findings Provide a New Window Into Memory

While past research has hinted at an overlap in relevant brain regions, the new work drills down to the cellular level. The discovery could help improve treatments for memory disorders, such as dementia, and certain psychiatric conditions, like schizophrenia

Astronauts struggle to adapt to weightlessness, even after months on the International Space Station, a study suggests.

Astronauts’ Memories of Earth’s Gravity May Influence How They Move and Hold Objects, Even After Months in Space

Examining the fine motor skills of space travelers can help improve safety for future missions, scientists say

Bruce is missing the top half of his beak. 

A Disabled Parrot in New Zealand Became Alpha Male Thanks to His Innovative Fighting Style

A kea parrot’s half-beak became an advantage instead of a disadvantage, researchers suggest in a new study

Scientists have long assumed that queen transitions in naked mole rat colonies were always chaotic and violent. But new research suggests another, more peaceful path also exists.

Naked Mole Rats Usually Duke It Out to Choose Their Next Queen. But These Unusual Rodents May Be Capable of More Peaceful Transitions of Power

In a laboratory experiment centered around a colony known as the Amigos, researchers observed a subordinate female take over reproduction without incident

The reseachers investigated preserved specimens kept at museums, like this Bufoceratias wedli from the Field Museum in Chicago.

Anglerfish Are Known for Their Built-in Fishing Rods. New Research Sheds Light on How These Lures Evolved in the Strange Creatures

A new study suggests the odd appendages first appeared in the fish’s ancestors around 72 million years ago. Today, females might use them not only to attract prey but also to communicate with potential mates

A Lyrid meteor photographed in Yunnan Province, China, on April 24, 2022

Look Up This Week to See the Peak of the Lyrid Meteor Shower. Humans Have Documented This Dazzling Annual Display for 2,700 Years

During the wee hours of April 22, moonset times will give stargazers in much of the United States a solid stretch of dark sky before sunrise

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