Biological Evolution: Unity and Diversity
- Fossils
Scary ‘chicken’ roamed Earth with T. rex
Scientists have just pieced together evidence of a weird new dinosaur that sported sharp claws, feathers and a beak. And it just may have been one of the last dinos to roam Earth about 67 million years ago.
- Fossils
Reviving dinosaurs
With the help of computers, researchers are getting a pretty good idea of how these ancient creatures moved, walked and ate.
- Archaeology
Ancient footprints surface in Britain
There are hints they could have been made by ancestors of Neandertals.
- Life
Caught in the act
Scientists observe some evolutionary speed demons as they adapt over the course of just a few years to new environmental conditions.
- Fossils
Where do humans come from?
Some scientists propose a newfound South African species as the most likely ancestor of the line that led to humans. But not everyone accepts that this is where it all began.
- Animals
Infectious animals
Critters spread many germs that can sicken each other — and even kill people.
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- Animals
Churk: Not for Thanksgiving
Here’s what happens when livestock breeders cross a chicken and a turkey
- Animals
The secret songs of giant beavers
Scientists discover a noisemaking chamber in the extinct animal’s skull.
- Fossils
Dino teeth tell a traveling tale
Dental evidence from sauropods suggests the mighty beasts migrated for food.
- Humans
Mummies share their secrets
Cutting-edge technology such as CT, or CAT, scans and endoscopes are allowing scientists to see not just what’s underneath the wrappings but also what’s inside a mummy’s body.
- Humans
Old bones ignite fresh debate
Scientists try to understand how 2 million-year-old fossils fit among ancient species.
