8,244 results
8,244 results for: Fish
- Chemistry
In a Fix: Agricultural chemicals disturb a natural relationship
Several pesticides can disrupt a partnership that enables certain plants to take up nitrogen by enlisting the help of bacteria.
- Physics
Supercool, and Strange
Scientists tracking H2O's highs and lows are finding new clues as to how and why the familiar substance is so odd. Recent research, for example, suggests that water may exist in two distinct liquid phases at ultralow temperatures.
- Earth
Traces of Trouble
Scientists and engineers are investigating how to stem the flow of naturally-occurring and synthetic estrogens that, when released from waste water treatment plants and livestock operations, can harm aquatic life.
- Earth
Hibernation concentrates chemicals
Some pollutants accumulate in grizzlies during the bears' hibernation.
- Earth
Invasive, Indeed
Some people may live lightly on the land, but the demands of the world's population as a whole consume nearly a quarter of Earth's total biological productivity.
- Earth
New Estimates of the Shark-Fin Trade
A new study of the Asian fish market yields a disturbing estimate of how many sharks are killed each year to satisfy demand for a pricy Asian soup.
- Animals
Fishy Reputations: Undersea watchers choose helpers that do good jobs
Coral reef fish use smart-shopper techniques of looking for satisfied customers before choosing a small fish to provide cleaning services.
- Humans
Letters from the October 21, 2006, issue of Science News
Fish story? To argue that the concentrations reported in “Macho Moms: Perchlorate pollutant masculinizes fish” (SN: 8/12/06, p. 99) are environmentally relevant is misleading. Those concentrations are usually in groundwater, not surface waters. I’ve been involved in the environmental field for almost 20 years and have yet to hear of any fish being caught in […]
- Agriculture
Lettuce Liability
A new industry program to self-regulate most salad producers is forcing affected farmers to choose between adopting measures unfriendly to wildlife and a loss of major markets for their greens.
- Ecosystems
Worthless waters
The biological riches of the oceans will be spent within decades if current trends continue.
- Animals
Why Play Dead?
Common wisdom dictates that playing dead discourages predators, but researchers are now thinking harder about how, or whether, that strategy really works.
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19758
It is not only the scientific literature that documents the unexpected “doughnut” pattern in swarms. Italo Calvino’s fictional Mr. Palomar observed (rather more lyrically) about the flocking of Roman starlings, “Finally a form emerges from the confused flutter of wings, advances, condenses: it is a circular shape, like a sphere, a bubble, the balloon-speech of […]
