Search Results for: Fish

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8,243 results

8,243 results for: Fish

  1. Health & Medicine

    Too Much of a Good Thing: Excess vitamin A may hike bone-fracture rate

    Dietary studies suggest that people who consume large amounts of vitamin A in foods or multivitamins are more likely to suffer hip fractures than are people who ingest modest amounts.

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  2. 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.

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  3. Brain wiring depends on multifaceted gene

    A single gene may produce 38,000 unique proteins that guide the growth of the developing brain.

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  4. 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.

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  5. How whales, dolphins, seals dive so deep

    The blue whale, bottlenose dolphin, Weddell seal, and elephant seal cut diving energy costs 10 to 50 percent by simply gliding downward.

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  6. Animals

    It’s a snake! No, a fish. An octopus?

    An as-yet-unnamed species of octopus seems to be protecting itself by impersonating venomous animals from sea snakes to flatfish.

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  7. Glacial warming’s pollutant threat

    Some Arctic wildlife are being exposed to high amounts of toxic wastes as glacial melting releases pollutants that had been buried in ice for decades.

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  8. Do oxpeckers help or mostly just freeload?

    A textbook example of mutualism—birds that ride around picking ticks off big African mammals—may not be mutually beneficial at all.

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  9. Health & Medicine

    Academic Impacts of Vegetarian Childhoods

    Teens are always looking for creative excuses for late homework, low test scores, and waning attention in class. Any who stumbled onto a copy of the September American Journal of Clinical Nutrition may have uncovered the basis for a particularly novel rationalization: “My parents made me a vegetarian.” Plants do not make vitamin B-12, also […]

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  10. Ecosystems

    Spring Forward

    Scientists who study biological responses to seasonal and climatic changes have noted that the annual cycles for many organisms are beginning earlier on average, as global temperatures rise.

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  11. Animals

    Lamprey Allure: Females rush to males’ bile acid

    An unusual sex attractant has turned up in an analysis of sea lampreys, and it may inspire new ways to defend the Great Lakes against invasive species.

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  12. Save Our Sounds

    Some 14 libraries around the world have built up substantial collections of natural sounds, from bird songs to fish hums.

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