Biological Evolution: Unity and Diversity
- Archaeology
Neandertals: Ancient Stone Age builders had tech skills
Neandertals built stalagmite circles in a French cave 176,500 years ago. These structures show that these ancient human cousins had social and technical skills.
- Archaeology
Hunter-gatherers roamed Florida 14,500 years ago
Tools and bones from a submerged site in Florida show that Stone Age people lived in North America earlier than was once thought.
- Oceans
Polar bears swim for days as sea ice retreats
Melting sea ice is forcing polar bears to swim long distances — up to nine days in one case. Such long treks may be more than the bears can handle.
- Archaeology
Remains of long-ago child sacrifices found in Belize cave
Thousands of bones in Belize’s Midnight Terror Cave show that the Maya had a long tradition of human sacrifices. New data show that many had been children.
- Fossils
Baby titanosaur was a mini version of its parents
Fossils show that baby titanosaurs looked like mom and dad. They may have been active and independent from a young age.
- Animals
Pollen can become bee ‘junk food’ as CO2 rises
Increasing levels of the greenhouse gas are changing diminishing the food value of pollen, bees’ only source of protein.
- Fossils
How to tell if a T. rex is expecting
A chemical test of tyrannosaur bone can determine whether the dino was pregnant — and therefore a female.
- Genetics
Pacific islanders got a double dose of Stone Age DNA
Unlike other people, certain Pacific Islanders inherited DNA from two ancient human ‘cousins.’
- Animals
Cool Jobs: Pet science
Pets make great subjects for research. These scientists work to make our animals — and us — healthier and happier.
- Humans
Slicing meat may have aided human evolution
An experiment with modern-day humans shows how slicing meat could have saved human ancestors energy — and let their bodies and brains get bigger.
- Fossils
Neandertal toe contains human DNA
DNA from a 50,000-year-old Neandertal woman’s toe bone shows humans left a mark on the ancient species — and much earlier than scientists had thought.
- Animals
Picture This: Plesiosaurs swam like penguins
A computer model suggests plesiosaurs — ancient marine reptiles — swam like penguins, using front flippers for power and back flippers for steering.
