8,306 results
8,306 results for: Fish
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19264
Get real. When you were 4 years old, you understood it better. It goes like this: You dump the inkwell (toxic discharge from industry and sewage systems) into the goldfish bowl (ocean) and the fish all turn belly up and the bowl is without fish. The moneyed polluting industries, of course, would rather not get […]
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19292
I thought that the X and Y chromosomes determined gender in animals, but I see no mention of them in your article. Does this mean that on a genetic basis, males and females in these organisms are identical? Neil H. MurphyWalnut Creek, Calif. In a sense, yes, says Philip Hastings of the Scripps Oceanographic Institute […]
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19299
This article could leave the impression that the evolutionary significant unit (ESU) is the de facto concept employed for all listing decisions under the Endangered Species Act. In fact, the ESU has not been used in the vast majority of recent listing decisions under the act. Nor should it be. The act allows the National […]
- Earth
Snowpack chemistry can deplete ozone
Pollutants trapped in Arctic snow can be reactivated by sunlight when the sun returns to high latitudes in the spring, leading to ozone depletion in the snowpack and at low altitudes.
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Film solves mystery of sleepwalking coral
For the first time, bewildered researchers realized that a bootlace-size eunicid worm can move chunks of coral around, perhaps explaining how some coral reefs get started.
- Chemistry
For a better smile, have some wasabi
Chemicals in the Japanese condiment wasabi could help prevent tooth decay.
- Earth
Plastic debris picks up ocean toxics
Some plastics can accumulate toxic pollutants from water, increasing the risk that they might poison wildlife mistaking these plastics for food.
- Ecosystems
Fish Epidemic Traces to Novel Germ
A new mycobacterium, related to the one causing tuberculosis, is responsible for a mysterious epidemic sickening some of the Chesapeake Bay's most prized fish.
- Paleontology
Jumbled bones show birds on the menu
A fossilized pellet of partially digested bones of juvenile and baby birds provides the first evidence that birds served as food for predators.
- Math
Catching Flies
Archerfish and baseball outfielders appear to use different strategies to snag a projectile. Archerfish (Toxotes jaculatrix) are famous for their unusual way of hunting insect prey. Upon spying an insect on a twig or a piece of foliage hanging above the water surface, the fish shoots it down using a strong, accurately aimed jet of […]
- Math
A Fibonacci Fountain
The year 1202 saw the publication of one of the most famous and influential books in mathematics. Widely copied and imitated, Liber abaci introduced the use of Arabic numerals and the Hindu-Arabic place-valued decimal system into Europe. It was written by Leonardo Pisano, who became better known by his nickname Fibonacci. Helaman Ferguson’s Fibonacci Fountain. […]
- Math
A Fibonacci Fountain
The year 1202 saw the publication of one of the most famous and influential books in mathematics. Widely copied and imitated, Liber abaci introduced the use of Arabic numerals and the Hindu-Arabic place-valued decimal system into Europe. It was written by Leonardo Pisano, who became better known by his nickname Fibonacci. Helaman Ferguson’s Fibonacci Fountain. […]
