Uncategorized
- Humans
Tools of a kind
People in southern Arabia around 100,000 years ago made tools like those of East Africans.
- Life
Mere fear shrinks bird families
Just hearing recordings of predators, in the absence of any real danger, caused sparrows to raise fewer babies.
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- Life
Cilia control eating signal
Little hairlike appendages in brain cells control weight by sequestering an appetite hormone.
- Health & Medicine
Bedbugs not averse to inbreeding
The pests have also developed ways to resist common insecticides, research shows.
