Evolution

The Average Person Can Recognize 5,000 Faces

But some participants in a recent study were able to recall as many as 10,000 faces

A blue whale, the largest known creature in Earth's history, dives into the St. Lawrence river in Quebec, Canada.

Today's Whales Are Huge, But Why Aren't They Huger?

Most giant cetaceans only got giant in the past 4.5 million years, suggesting they could have room to grow

New Fossil Dubbed 'Giant Thunderclap at Dawn' Shows How Big Dinos Went From Two Legs to Four

A new species discovered in South Africa shows how dinosaurs went from bipedal beasts to four-legged giants like brontosaurus

An artist’s impression of the prehistoric bird from the early Cretaceous period that retained some pretty dino-like features.

This 127-Million-Year-Old Fossil Links Dinosaur and Bird Evolution

The dino-bird hybrid boasts a stubby tail, clawed wings and sharp teeth

Researchers first discovered Dickinsonia fossils back in 1946.

The World's Earliest Known Animal May Have Been a Blob-Like Undersea Creature

Traces of fat found on a 558-million-year-old fossil suggest <em>Dickinsonia</em> was an animal rather than fungus, plant or single-celled protozoa

Humans' CMAH gene mutation may enable them to exhibit higher endurance over long periods of exercise

Human Gene Mutation May Have Paved the Way for Long-Distance Running

Mice with engineered versions of the CMAH gene exhibited 30 percent better endurance than those without

Chimps and Toddlers Use Same Gestures to Get Attention

A new study shows 12 to 24 month old children and chimps use 46 of the same movements to communicate, including stomping, pointing and clapping

A jaw of an Eoconodon coryphaeus—a house cat-sized omnivore that lived between about 66 and 63 million years ago—that Williamson collected in the San Juan Basin.

Nuclear Technology May Help Bring Early Mammal Evolution Into Focus

Using a neutron scanner at Los Alamos, paleontologists are generating high-resolution imagery of early mammal fossils

Sometimes, it's okay to skip leg day.

For Men, Gains in the Gym May Come at a Cost to Sperm

There might be a tradeoff between how strong men look and sperm count

New research shows that fish can tell the differences between quantities. What does that mean for our special human brains?

One Fish, Two Fish, Fish Can Count(ish?)

New research shows—again—that fish “count” like humans do. Are our cognitive evolutionary roots fishier than we thought?

A photograph of the fossil turtle Eorhynchochelys sinensis, which lived about 228 million years ago and sported a beak but no shell.

Newly Discovered Turtle Ancestors Chomped With Beaks But Bore No Shells

A 228-million-year-old fossil fills gaps in the tale of turtle evolution—and raises a few questions

Some of the ‘remarkable beetles’ Wallace collected in Borneo.

Tracing Alfred Russel Wallace’s Footsteps Through the Jungles of Borneo

A biologist treks to the site where the little-known naturalist penned a paper on evolution that would spur on a rivalrous Charles Darwin

How Accurate Is the Theory of Dog Domestication in 'Alpha'?

The "boy and his dog" tale is a piece of prehistoric fiction, but scientists are uncovering the true origins of our incredible relationship with dogs

Caelestiventus hanseni.

Rare Desert Pterosaur Fossil Discovered in Utah

The rare Triassic fossil is the most complete early pterosaur ever found, and gives new insight into the evolution of the first flying vertebrates

Elephants, which can weigh up to 100 times as much as humans, should be riddled with cancer—but they aren't.

Cancer Is One Worry Elephants Can Feel Free to Forget

The gentle giants' cells contain a tumor-fighting self-destruct button.

An Ediacaran fossil from the National Earth Science Museum, Namibia.

Mysterious, Plant-Like Fossil May Have Been One of the Earliest Animals

New research suggests that soft-bodied organisms called Ediacarans may have been related to an animal of the Cambrian era

These ephemeral puddles are the birthplace, home and grave of the killifish.

Meet the Fish That Grows Up in Just 14 Days

The turquoise killifish, which lives in ephemeral pools in Mozambique, progresses from embryo to sexual maturity faster than any other vertebrate

Birds Can Learn "Foreign" Languages to Stay Safe

The superb fairywren was able to learn a new alarm call just by listening to the warnings of other species

Birds don’t fly across wide Amazonian rivers like the Rio Negro.

How Amazon Rivers Play a Role in the Evolution of Birds

Rivers are natural boundaries for evolving populations. But scientists don't agree whether they create new species or just help maintain them.

Anolis scriptus, the Turks and Caicos anole, on Pine Cay

Lizards With Bigger Toes and Smaller Hind Legs Survive Hurricanes

A serendipitous study comparing the physical traits of lizards before and after 2017's hurricane season shows natural selection in action

Page 16 of 42