Evolution

Just one section of a marine worm with a strange, branching body. This species usually lives inside the many-chambered body of a sea sponge

This Marine Worm Sprouts Hundreds of Butts—Each With Its Own Eyes and Brain

When it’s time to reproduce, each of the worm’s many rear ends will swim off to get fertilized

A male masked crimson tanager displays his brilliant red and black plumage in Peru.

These Male Birds Deploy Deceptive Plumage to Win Mates

Male tanager feathers have microstructures that reflect light in ways that make their bearer look more attractive, even if he’s not the fittest bird around

An artist's rendering of a newly described species of flying reptile named Kunpengopterus antipollicatus. The Jurassic-era pterosaur may be the earliest animal known to possess opposable thumbs.

A Prehistoric Flying Creature Nicknamed 'Monkeydactyl' May Have Climbed Trees Using Opposable Thumbs

The newly described Jurassic pterosaur may be the oldest animal known to possess opposable thumbs

A new study suggests the lush, hyper-diverse rainforests of South America were shaped by the asteroid impact that killed off the dinosaurs.

How the Dinosaur-Killing Asteroid Spurred the Evolution of the Modern Rainforest

New evidence from fossil plants shows today’s South American rainforests arose in the wake of Earth’s fifth mass extinction

A tiny, aphid-like whitefly sitting on a leaf.

This Insect Has Plant DNA in Its Genome

Whiteflies have a gene only found in plants that appears to allow the tiny insects to withstand plants’ chemical defenses

All modern dogs are descended from a wolf species that when extinct around 15,000 years ago. Grey wolves, pictured here fighting for food with now extinct dire wolves (red), are dogs’ closest living relative.

Meet the Scientist Studying How Dogs Evolved From Predator to Pet

Learn about how humans of the past helped build the bond between us and our favorite furry friends

A fulgurite made of fused quartz found in Florida

Ancient Lightning May Have Sparked Life on Earth

More than a billion strikes a year likely provided an essential element for organisms

A male superb lyrebird

This Bird Mimics an Entire Flock to Woo Females

When mating, male lyrebirds reproduce a cacophony of calls usually reserved for when predator is nearby

Juveniles from species of massive carnivorous dinosaurs, such as Tyrannosaurus rex, may have out-competed species that would have otherwise succeeded as medium-sized adults, according to new research.

Why Medium-Sized Dinosaurs Are Often Missing From the Fossil Record

Study suggests huge carnivores like T. rex may have occupied the ecological roles of medium-sized predators as juveniles

Slime mold in a petri dish. New research finds that slime molds can store memories by changing the diameter of the branching tubes they use to explore their environment, allowing them to keep track of food sources.

How the Brainless Slime Mold Stores Memories

New research finds the organism can remember the location of food by altering the diameter of the creeping tendrils it uses to explore its surroundings

A statue of Charles Darwin sits in the Natural History Museum in London. The scientist's book 'Descent of Man' was published in 1871.

How Darwin's 'Descent of Man' Holds Up 150 Years After Publication

Questions still swirl around the author’s theories about sexual selection and the evolution of minds and morals

New research finds that springhares, hopping rodents native to southern Africa, glow under UV light.

This Bouncing African Mammal Glows Under UV Light

Springhares are the latest in a flurry of furry creatures that scientists have discovered are biofluorescent

Only the flower on the far left is real. The rest are made of fungus.

This Fungus Makes Convincing Fake Flowers From Scratch

The yellow, flower-shaped growths lure in pollinator insects to spread the fungus’ spores

Zebrafish are classic study animals for understanding genetics and development.

A Single Altered Gene Can Make Fish Fins More Like Limbs

Researchers find a mutation that offers clues to the ancient sea-to-land transition of vertebrates

These five skulls, which range from an approximately 2.5-million-year-old Australopithecus africanus on the left to an approximately 4,800-year-old Homo sapiens on the right, show changes in the size of the braincase, slope of the face and shape of the brow ridges over just less than half of human evolutionary history.

An Evolutionary Timeline of Homo Sapiens

Scientists share the findings that helped them pinpoint key moments in the rise of our species

Fossil remains of crocodiles from as early as the Jurassic period show identifying characteristics in modern crocodiles

Are Crocodiles Flawless? The Reptiles Haven't Changed in 200 Million Years

For crocs, slow and steady wins the evolutionary race

An Australian lungfish (Neoceratodus forsteri) at the Haus des Meeres in Vienna, Austria.

Australian Lungfish Has Biggest Genome Ever Sequenced

The air-breathing fish dethrones the Mexican axolotl for the title of largest known genome in the animal kingdom

An artist's illustration of two gray wolves (lower left) vying with a pack of dire wolves for a bison carcass near the tar pits in Rancho La Brea roughly 15,000 years ago.

Dire Wolves Weren't Actually Wolves, DNA Analysis Reveals

Ancient DNA extracted from fossils shows the beast split off from Canis lupus and coyotes nearly 6 million years ago

The Volta’s electric eel, Electrophorus voltai, emits the strongest shocks of any animal on Earth. Although these eels were thought to be loners, the species was recently seen hunting in a group.

Shocking Study Finds Electric Eels Hunt Together

The study challenges what researchers know about eels’ supposed loner behavior

If the platypus looks like a mixture of bird and mammal features, it's because it is.

Platypus Genes Are Just as Odd as the Creature Itself

These egg-laying, lactating animals have genes in common with mammals as well as birds

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