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Biology

Microplastics have been found throughout the human body.

Microplastics Have Been Linked With Myriad Human Health Problems. Scientists May Have Finally Figured Out How They Harm the Body

Lab experiments suggest that tiny bits of plastic can react with water inside us to produce highly reactive molecules. They can lead to damaging oxidative stress and inflammation

The rate of molecular aging differs between big dogs and small dogs, according to a new study.

Small Dogs Tend to Live Longer Than Big Dogs. Scientists Say They Might Finally Know Why—and It Goes to the Molecular Level

Larger breeds like Great Danes seem to accumulate changes to chemical tags on their DNA more quickly than tinier breeds, such as chihuahuas. These alterations allow potentially harmful ‘jumping genes’ to move around their genomes

Chinstrap penguins are dietary specialists that mainly eat Antarctic krill.

One of the World’s Largest Chinstrap Penguin Colonies Is Shrinking Fast

Zavodovski Island, a remote, uninhabited volcanic island between South America and Antarctica, lost 63 percent of its chinstrap penguins between 2011 and 2025, according to a new study

Bolotana is a town on the Italian island of Sardinia with about 2,300 residents.

This Tiny Sardinian Village Might Be a New ‘Blue Zone’—and Could Hold the Secrets to Female Longevity

In Bolotana, a town on the Italian island with about 2,300 residents, women who reach the age of 70 are about three times as likely to live to 100 than women in the United States, according to a new study

The Hadza are some of the last nomadic hunter-gatherers.

Did Industrialization Gut Our Microbiomes? A New Study on Rural Foraging Communities in South America and Africa Hints the Answer Is Yes

Two groups—the Tsimane forager-horticulturists in Bolivia and the Hadza hunter-gatherers in Tanzania—remarkably share more than 1,200 gut microbe species. However, around 60 percent of them are rare or absent in people living in industrialized places, according to researchers

Jonathan stands on the lawn of Plantation House, the governor's residence in Saint Helena. The Aldabra giant tortoise holds the world record for being the oldest living land animal.

Scientists Took a Cheek Swab From the World’s Oldest Tortoise. His DNA Could Reveal Hints to Longevity

Jonathan, an Aldabra giant tortoise, is about 194 years old and the oldest land animal alive today. Discoveries about his genetics could provide clues to extending lifespan in humans

The bare-throated bellbird is among the world’s loudest birds.

These South American Birds Can Match a Jackhammer’s Ear-Splitting Volume, Making Them Some of the World’s Loudest Known Avians

The bare-throated bellbird and the red-legged seriema can produce sounds at amplitudes that exceed 120 decibels, which puts them on par with a trumpeting elephant or a chainsaw

Elephant rumbles include frequencies that are below the range of human hearing.

African Elephants Often Produce Choruses of Low-Pitched Rumbles. Now, Scientists Are Using A.I. to Decode the Joint Vocalizations

New research suggests the animals’ overlapping calls serve as coordinated group messages and may contain additional information beyond what’s encoded in individual rumbles

Tyrannosaurus rex’s image has seen major adjustments over the past century.

Five Discoveries That Changed Our Understanding of T. Rex Forever, From Warm Blood to Lips

Paleontologists are still unraveling the secrets of the world’s most famous dinosaur, such as its outward appearance or the way that it hunted. With each new finding, our view of the “tyrant lizard king” has gotten a little clearer—and sometimes has radically shifted

The specimen of the last known passenger pigeon, Martha, preserved in the Smithsonian’s collection. Martha died in 1914 at the Cincinnati Zoo.

These Five Birds Have Disappeared Forever. Their History Offers a Valuable Lesson for the Future

In an exhibition celebrating the natural history of the United States, a small group of taxidermy birds stands as a reminder of loss—and a symbol of hope

An artistic rendering of the newly discovered species Norellraptor barsboldi.

Remarkable Fossil of a Feathered, Winged Dinosaur Further Hints That Flight Evolved Multiple Times Among the ‘Terrible Lizards’

The fossil belonged to a category of dinosaurs called microraptors, which were bird-like but not ancestors of modern-day avians. A new study found that this group of ancient predators evolved similar anatomical adaptations to birds, but developed them in a different order

The indri is the only known species of lemur that sings.

These Wild Lemurs Sing Just Like Opera Stars, Widening Their Mouths as They Hit the High Notes, Study Suggests

Scientists suspect this musical trait arose independently in humans and indris, which split from a common ancestor some 74 million years ago. Today, the lemurs make loud, haunting calls to communicate with one another in the dense forests of eastern Madagascar

Enceladus is one of Saturn's 293 known moons.

Could Saturn’s Moon Enceladus Host Alien Life? Earth Microbes Can Live in Its Simulated Environment, Boosting Its Potential Habitability

Enceladus is covered in ice, but that layer might hide a subsurface ocean. Researchers have long wondered if the salty body of water has the right conditions to host life, and now, a team suggests that an Earthly, heat-loving organism could thrive there

With so many food products now touting added protein, consumers have been left wondering how much is really necessary.

Is More Protein Always Better? Despite the Craze Around the Nutrient, Research-Backed Evidence About Its Benefits Is Complicated

It can be difficult to see through the array of flashy, protein-packed products and determine whether you need more of it—and which foods to consume to get it. We asked health experts about the benefits and drawbacks of chasing protein

Researchers prompted around 950 A.I. agents to search through a massive DNA database.

Anthropic Says Its A.I. Discovered a New Enzyme System That Resembles the Revolutionary Gene-Editing Tool CRISPR

Experts at the company don’t know what the newfound system does, so its potential utility in biology—if any—remains unclear. But the work marks a major advancement because the A.I. made this discovery mostly on its own

The rare two-headed turtle was found at a proteted nesting site.

Two Heads Are Better Than One: Rare, Double-Headed Turtle Hatchling Discovered on Cape Cod

The tiny diamondback terrapin was brought to a wildlife center on September 17. At the time, the creature weighed about as much as a nickel

Fire amoeba wiggling around at 140 degrees Fahrenheit

Meet the ‘Fire Amoeba,’ a Newfound Blobby Organism That’s Defying Expectations About How Much Heat Complex Life Can Handle

The newly described species, found in Northern California’s Lassen Volcanic National Park, can still reproduce at 145 degrees Fahrenheit and move around at 147 degrees, according to a new study

A newly identified stick insect species, Anchiale mabiensis, can be found in the Mabi Forest of Australia.

Two New Stick Insect Species Have Been Discovered in Australia—and Another One Was Hiding in Plain Sight

The new discoveries emphasize that scientists have a lot left to learn about insect diversity, even in areas with many observations

The common vampire bat (Desmodus rotundus) is one of 1,500 species of bats around the world.

Where Did Bats Originate? Huge Genetic Study May Have Settled the Longstanding Debate and Rewritten the Creatures’ Evolutionary Tree

The flying mammals likely arose 65 million years ago in Europe, before spreading to Africa and then the rest of the world, according to the new research

Participants in Germany liked the Eurasian blackbird's call the most out of a list of vocalizations made by more than 100 birds.

Some Birdsongs Are More Pleasing to Human Ears Than Others. Higher-Pitched, Complex Calls Tend to Sound More Beautiful to Us

In a new study, more than 80 participants rated the pleasantness of vocalizations made by 123 European bird species. Researchers then looked at the acoustic qualities of the most—and least—liked songs

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