8,240 results
8,240 results for: Fish
- Animals
Many fish run on empty
Many fish eat all the time, while some others spend their days going from brief feast to lengthy famine.
- Earth
Spawning Trouble: Synthetic estrogen hampers trout fertility
Exposure to a synthetic estrogen called ethynylestradiol, which is commonly found in birth control pills and enters the waterways through sewage effluent, reduces male trout’s fertility by half.
- Health & Medicine
Counting Carbs
Although low-carbohydrate diets can be powerful weight-loss tools, many physicians now conclude they aren't for anyone who isn't under a doctor's watchful eye.
- Animals
Musical Pairs: Egg-deploying bird species divide for a song
A new genetic analysis bolsters the idea that musical taste, rather than geography, split Africa's indigobirds into multiple species.
- Chemistry
Sensor sniffs out spoiled fish
A new electronic nose detects amine compounds produced when fish decay.
- Earth
Indonesian reefs fell prey to fires
The fires that swept through Indonesian rain forests late in 1997 apparently laid waste to some marine ecosystems, as well.
- Earth
What’s happening to German eelpout?
Reproductive anomalies in eel-like fish may represent good markers of exposure to hormones or pollutants that mimic them.
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Protein Portal: Enzyme acts as door for the SARS virus
A protein that regulates blood pressure also serves as the cellular portal for the SARS virus.
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Fading to black doesn’t empower fish
Field studies of three-spined stickleback fish dash a textbook example of the theory of how one species can take on a competitor's characteristics.
- Earth
Mapping watersheds invites comparisons
Computerized maps of environmental features for 154 of the largest river watersheds will soon be available to the public, free of charge.
- Humans
From the August 9, 1930, issue
A FISH WITH HANDS A fish of more than ordinary piscine talent is sometimes found in the drifting masses of gulfweed or Sargassum in the great mid-Atlantic eddy. It is only a little fish, a couple of inches long, but it can use its two pectoral fins for some of the functions of hands. It […]
- Earth
Limiting Dead Zones
To limit algal blooms and the development of fishless dead zones in coastal waters, farmers and other sources of nitrate are investigating novel strategies to control nitrate runoff.
