8,240 results
8,240 results for: Fish
- Chemistry
Gritty Clues
Archaeologists are tying chemical signatures found in the soil to past human activity.
- Animals
New candidates for smallest vertebrate
Two recent scientific papers have described fish species that could, depending on the definition, be the world's smallest known vertebrate.
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Wasting Deer: Deer saliva and blood can carry prions
Saliva alone can transmit a brain-destroying disease from one animal to another.
- Earth
Something’s fishy about these hormones
Synthetic steroids used to beef up cattle can impair reproduction in female fish and even give them macho physical traits.
- Earth
Oil Booms: Whales don’t avoid noise of seismic exploration
Field tests in the Gulf of Mexico suggest that sperm whales there don't swim away from boats conducting seismic surveys of the seafloor, but the noise generated by such activity may be subtly affecting the whales' feeding behavior. With video.
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Shades of Flesh Tone: Tests reveal gene for people’s skin color
Researchers have identified a gene that they propose plays a major role in determining a person's skin color.
- Earth
Sinking Mercury: Light-based reactions destroy toxic chemical in Arctic lakes
Sunlight triggers the entry of poisonous mercury into polar lakes, but it also removes most of the toxic compound before fish can consume it.
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Pigging Out Healthfully: Engineered pork has more omega-3s
Scientists have created pigs that sport much higher concentrations of omega-3 fatty acids in their tissues than normal pigs do.
- Humans
Letters from the August 19, 2006, issue of Science News
Aye carumba Math isn’t the only science that makes it into The Simpsons (“Springfield Theory,” SN: 6/10/06, p. 360). In one episode a few years ago, a meteorite landed near Bart. He picked it up and put it in his pocket. Although most people are under the impression that meteorites are extremely hot, they’re not. […]
- Humans
From the September 19, 1936, issue
A nebula photographed, thin films, and cancer as uncontrolled cell growth.
- Ecosystems
Feminized cod on the high seas
Male cod in the open ocean are producing an egg-yolk protein ordinarily made only by females, signaling their potential exposure to estrogen-mimicking pollutants.
- Animals
Perfect Match: Tied contest gives fish no hormone rush
A male fish produces a burst of hormones as he fights off an intruder, but this surge isn't triggered simply by fighting.
