8,272 results
8,272 results for: Fish
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Light switch
A photosensitive molecule makes switching off a gene as simple as flicking on a light.
- Earth
Lack of oxygen stunts fish reproduction
Seasonal oxygen shortages in coastal waters, increasing in severity because of pollution, may impair fish reproduction.
- Anthropology
Advantage: Starch
An enhanced ability to digest starch may have given early humans an evolutionary advantage over their ape relatives.
- Animals
Fish Switch: Salmon make baby trout after species, sex swap
Salmon implanted with trout reproductive tissue bred to produce a generation of normal rainbow trout.
- Animals
Hybrid Power: Salamander invader ups survival of rare cousin
Mixed offspring of the endangered California tiger salamander and an invasive cousin survive better than either pure-bred species, raising tricky questions for conservationists.
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Jungle Down There: What’s a kelp forest doing in the tropics?
Kelp, algae that grow in cold water, turn out to be surprisingly widespread in tropical seas.
- Health & Medicine
Diabetes precursor may be checked by omega-3 fatty acids
Omega-3 fatty acids in the diet might fend off diabetes in children prone to the disease.
- Animals
Smells Funny: Fish schools break up over body odor
Just an hour's swim in slightly contaminated water can give a fish such bad body odor that its schoolmates shun it.
- Paleontology
The first matrushka
A newly found fossil preserves one creature inside another that lies nestled inside yet another, a Paleozoic version of the Russian nesting dolls known as matrushkas.
- Health & Medicine
Early Arrival: HIV came from Haiti to United States
New analysis of 25-year-old blood samples indicates that HIV reached the United States in about 1969, 12 years before AIDS was first formally described.
- Health & Medicine
Bomb craters mean trouble for islanders
A skin infection in people living on the Pacific island of Satowan stems from swimming in ponds formed from World War II bomb craters there.
- Animals
Hatch a Thief: Brains incline birds toward a life of crime
When it comes to a bird family's propensity to pilfer, a larger than usual brain for a particular body size is more important than body size alone.
