Evolution

To find the roots of an unlikely connection, researchers are untangling lemur microbiomes. Here, ring-tailed lemurs feast at Serengeti Park in Hodenhagen, Germany.

What Lemur Guts Can Tell Us About Human Bowel Disease

Similarities between us and the cuddly primates could help us understand the origins of human illnesses—and treat them

The reproductive organs of Schlumbergera, known as the Holiday Cactus. This was heady stuff in Erasmus Darwin's time.

Charles Darwin’s Grandfather Was Famous for His Poems About Plant Sex

Erasmus Darwin’s poetics influenced his grandson’s vision of nature

What's a dinosaur, anyways? The answer is in the evolutionary tree.

What Makes a Dinosaur a Dinosaur?

The question may sound like a "duh," but it gets to the heart of how we categorize and define nature

Jane Goodall reaches out to touch hands with Flint, the first infant born at Gombe after her arrival.

New Jane Goodall Documentary Is Most Intimate Portrait Yet, Says Jane Goodall

The famed chimp researcher didn’t want yet another documentary made about her. <i>Jane</i> changed her mind

The Ten Best Science Books of 2017

These books not only inspired awe and wonder—they helped us better understand the machinations of our world

Your Oldest Ancestor Was Probably Sponge Like

A new study may settle a long-running debate about which creature was the first to evolve from a universal common animal ancestor

There are good reasons why you won't see a Siamese fighting fish swimming this way in the wild.

The Evolutionary Reason Why Fish Don't Swim Upside Down

It’s a natural question for animals that float, but few scientists have delved into the details

Crested pigeons make an awful racket when they take off—but where's it coming from?

Australian Pigeons Have a Specially Evolved Feather to Better Annoy the Heck Out of You With

Pinpointing the birds’ noisemakers could help researchers better understand why urban avians make so much dang noise

In her second book, The Sexes Throughout Nature, Blackwell argued that while male lions are physically larger and stronger, female lions were “more complex in structure and in functions” through their ability to reproduce and feed their young.

The Woman Who Challenged Darwin's Sexism

How a preacher with no scientific training ended up writing the first feminist critique of <em>Origins</em>

When the Dinos Went Away, Mammals Came Out (in Daylight) to Play

While it's challenging to imply one caused the other, a new study shows that mammals came into the light of day soon after the dinos disappeared

A member of the new orangutan species, Pongo tapanuliensis.

Found: A New Species of Orangutan

But it's thought to be already critically endangered

Decennatherium rex

Four-Horned Giraffe Ancestor Unearthed in Spain

The fossil is an unusually complete individual of an ancient giraffid species

Is fear of creepy crawlies nature or nurture?

Spiders Give You the Heebie Jeebies? You Might Be Born With That Fear

New research shows that even babies are creeped out by these wriggly critters

Diploscapter pachys hasn't had sex for 18 million years, and is doing just fine

This Worm Hasn't Had Sex in 18 Million Years

By fusing its chromosomes, the creature could essentially clone itself while still maintaining genetic variation

A bit of 3.95 billion-year-old graphite locked in quartz

This May Be the Oldest Traces of Life Yet Found

Bits of graphite, 3.95 billion years old, suggest life was churning away soon after Earth's formation

The wings of a normal and CRISPR-edited Sara Longwing butterfly show how disabling a single gene can change the patterns

Scientists Identify the Genes That Paint Butterfly Wings

Using genetic editing, scientists isolated just two genes that play a major role in making butterfly wings as pretty as they are

Cassiopea jellyfish resting "upside-down" in their tank

Even Without a Brain, Jellyfish Still Need to Sleep

These simple, ancient creatures show just how deeply rooted sleep may be in the animal kingdom

Two tree frogs share an intimate moment. The eye-popping yellow of the male only emerges in mating season.

The Color-Changing Marvel of Tree Frogs Looking for Love

A new study sheds light on the wild world of "dynamically dichromatic" amphibians

Using their elongated necks just right, giraffes can stay cool on the steamy savannah

How Do Giraffes Stay So Cool? Perhaps the Secret Is a Long Neck

Those long, thin necks may be used to shade their skin from the hot African Sun

Taxonomic vandalism can have disastrous consequences for wildlife conservation—but it could also impact human health. Shown here, an African spitting cobra poised to strike.

A Few Bad Scientists Are Threatening to Topple Taxonomy

Naming species forms the foundation of biology—but these rogue researchers are exposing the flaws in the system

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