Evolution

This spine is the earliest intact reference for how humans' skeletons may have developed.

This 3.3-Million-Year-Old Hominin Toddler Was Kind of Like Us

Analysis of the ancient spine reveals tantalizing similarities—and questions about human evolution

Ornithologist John Gould's illustrations of finches collected by Charles Darwin on the Galápagos Islands show the physical differences that the men relied on in dividing them into different species.

What Does It Mean to Be a Species? Genetics Is Changing the Answer

As DNA techniques let us see animals in finer and finer gradients, the old definition is falling apart

Illustration of Mystacodon selenensis

This 36-Million-Year-Old Fossil Is a "Missing Link" in Whale Evolution

Discovered in Peru, the new fossil has tiny remnants of hind limbs

The stone flakes are flying, but what brain regions are firing?

How Smart Were Early Humans? “Neuroarchaeology” Offers Some Answers

Brain Imaging Gives Insight Into Early Human Minds

How Glaciers Gave Us the Adorable, Handstanding Spotted Skunk

DNA tests suggest ancient changes in climate shaped the creatures' evolution

Henry Bates (Calum Finlay) was a self-taught field biologist and note taker. He created remarkable drawings and watercolors of his collections and observations. Several of his original notebooks are in the archives of London's Natural History Museum.

How Filmmakers Distill Science for the Big Screen

The new film <i>Amazon Adventure</i> turns decades of research into 45 minutes of visual majesty

You can't sit with us. You smell like poo.

Gut Check: Mandrills Sniff Poop to Avoid Peers With Parasites

Researchers have documented one of the first instances of social avoidance in a non-human animal

Ingenious leafcutter ants have developed a successful symbiotic relationship with the fungi they farm. New genetic analysis helps pinpoint when, and why.

How Ants Became the World’s Best Fungus Farmers

Ancient climate change may have spurred a revolution in ant agriculture, Smithsonian researchers find

Are creatures like this at the bottom of animals' family tree?

Scientists Think Comb Jellies May Have Come Before All Other Animals

Sorry, sponges—there’s a new oldest ancestor in town

Are orangutans aware that others have different minds than their own?

Monkeys May Recognize False Beliefs—Knocking Over Yet Another Pillar of Human Cognition

Apes may be aware of the minds of others—yet another remarkable finding about the cognitive abilities of non-human animals

Lesson learned: Don't cross a fangblenny.

These Tropical Fish Have Opioids in Their Fangs

The point isn’t to relieve pain—it’s to kill

Smithsonian researchers found that otters that use tools aren't closely related.

Unlike Dolphins, Sea Otters That Use Tools Are Not Closely Related

Rock-bashing in otters is a very old behavior

The challenges of finding fruit may have driven the evolution of bigger brains in our primate ancestors

What Really Made Primate Brains So Big?

A new study suggests that fruit, not social relationships, could be the main driver of larger brains

Bird-like versus lizard-like hips define the two major categories of dinosaurs

New Study Restructures the Dinosaur Family Tree

Detailed analysis of dino fossils suggests that <i>Tyrannosaurus</i> and its relatives may be on the wrong side of the tree

Nearly blind, Typhlomys cinereus thrives in the high forests of southeastern China and Vietnam—with a little help from another sense.

This Echolocating Dormouse Could Reveal the Origins of One of Nature’s Coolest Superpowers

Mice, moths and even humans use clicks and echoes to "see" the world around them

The ancient damselfly's courtship ritual was caught in amber 100 million years ago.

Flirtatious 100-Million-Year-Old Damselflies Found Frozen in Amber

Scientists are learning about how insects evolved from their ancient come-hither dance

From the same DNA, different genders can boast dramatically different characteristics. Dung beetles are helping scientists understand how.

What Dung Beetles Can Teach Us About Sexual Difference

When it comes to sex appeal, it's not all in your genes (it's also in your proteins!)

How did the sabertooth cat wield its excess of tooth?

How Did Sabercats Use Those Outlandish Fangs?

We’ve barely scratched the surface of how this charismatic cat utilized its dental cutlery

False-color x-ray of the purported 1.6 billion-year-old red algae

At 1.6 Billion Years Old, These Fossils Could Be the Oldest Complex Life

Three types of ancient red algae-like fossils captivate scientists, but many questions remain

New research strengthens the theory that different climates influenced the shape of the human nose.

How Climate Helped Shape Your Nose

New research shows how the width of our nasal passages is literally shaped by the air we breathe

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