Biological Evolution: Unity and Diversity

Animals

Eating can be skin deep

In the laboratory, bottom-dwelling hagfish absorb nutrients through the skin.

Health & Medicine

Evolved to run

Heel bones hint that humans could run farther than Neandertals.

Fossils

Dinosaur Eggs-citement

Scientists have found dinosaur eggs, with their shells on, inside a female dino fossil.

Fossils

Dino Flesh from Fossil Bone

Scientists may have found dinosaur blood vessels and cells inside a fossilized leg bone.

Fossils

Dino takeout for mammals

Ancient mammals dined on young dinosaurs.

Fossils

Big fish in ancient waters

Fossils have revealed an ancient, oversized relative of modern-day swordfish.

Fossils

Dino bite leaves a tooth

Meat-eating dinosaurs sometimes feasted on flying reptiles.

Fossils

Ancient critter caught shedding Its skin

A fossil reveals that ancient animals shed their skin, just as insects and crustaceans do today.

Humans

Digging up Stone Age art

Researchers have uncovered some very old, mysterious animal sculptures.

Fossils

Dinosaurs grow up

Learning how fast dinosaurs grew may help link birds to dinosaurs.

Fossils

Did dinosaurs do handstands?

Enormous dinosaurs might have balanced on their front feet when wading in shallow water.

Fossils

A really big (but extinct) rodent

A rodent about the size of a bison once roamed the riverbanks of ancient Venezuela.