News
- Archaeology
Ancient origins of fire use
Human ancestors may have learned to control fire 1.7 million years ago in eastern Africa.
- Archaeology
Guard dogs and horse riders
More than 5,000 years ago, the Botai people of central Asia had ritual practices that appeared in many later cultures.
- Earth
Global warming is marmot wake-up call
Marmots are coming out of hibernation earlier, while chipmunks and ground squirrels sleep longer-effects that could be attributed to global warming.
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Chicken Rank: Hen social position shifts egg hormones
A study of leghorn chickens has linked hormone concentrations in a hen's eggs to her rank in the pecking order.
