8,271 results
8,271 results for: Fish
- Earth
Memory problems linked to PCBs in fish
Adult exposures to polychlorinated biphenyls, from eating tainted fish, correlate with lower scores on learning and memorization tasks.
- Anthropology
Human fossils tell a fish tale
Fossil clues indicate that Stone Age humans ate a considerable amount of seafood, giving them a broader and more resilient diet than that of Neandertals.
- Earth
Uncertainty returns over sex-change fish
Scientists question whether a potentially gender-bending hormone found in polluted Florida streams is responsible for masculinized female fish.
- Health & Medicine
Arctic Sneeze: Greenlanders’ allergies are increasing
Allergies in Greenland nearly doubled from 1987 to 1998.
- 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.
- Humans
Small Steps: World Summit delegates wrangle over eco-friendly future
Twenty thousand delegates from around the world met in Johannesburg last week for a contentious World Summit on Sustainable Development.
- Animals
Eat the Kids: Are cannibal fish just freshening the O2?
In beaugregory damselfish, males that snack on some of the eggs supposedly in their care may end up benefiting the rest of the egg clutch by making more oxygen available.
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Milestones for Malaria: Parasite, mosquito genes decoded
Unraveling the DNA of a malaria-causing parasite and of a mosquito that carries it may suggest new ways to combat the deadly disease.
- Materials Science
Molecular Separations: New artificial sieve traps molecules
Researchers have created a metal-laced organic solid that acts as a sieve with nanosize pores for capturing molecules.
- Health & Medicine
Making the optic nerve sprout anew
A compound made during inflammation, a natural reaction to injury, can induce optic nerve regeneration in a lab-dish concoction including rat retinal ganglion cells.
- Earth
Contraceptive-Patch Worry: Disposal concern focuses on wildlife
Some scientists now worry that discarded contraceptive patches may leak synthetic estrogen into the environment, potentially harming wildlife.
- Paleontology
Mosasaurs were born at sea, not in safe harbors
Newly discovered fossils of prehistoric aquatic reptiles known as mosasaurs suggest that the creatures gave birth in midocean rather than in near-shore sanctuaries as previously suspected.
