Search Results for: Fish

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8,304 results

8,304 results for: Fish

  1. Math

    Test decodes dolphins’ math skills

    Dolphins could use mental math to locate prey in clouds of bubbles.

    By Meghan Rosen
  2. Earth

    Antibacterial agent can weaken muscle

    Triclosan impairs the power of the heart and other muscles in two species and at relatively low doses.

    By Janet Raloff

  3. Light switch

    A photosensitive molecule makes switching off a gene as simple as flicking on a light.

    By Brian Vastag
  4. Earth

    Lack of oxygen stunts fish reproduction

    Seasonal oxygen shortages in coastal waters, increasing in severity because of pollution, may impair fish reproduction.

    By Sarah Webb
  5. Anthropology

    Advantage: Starch

    An enhanced ability to digest starch may have given early humans an evolutionary advantage over their ape relatives.

    By Brian Vastag
  6. Animals

    Fish Switch: Salmon make baby trout after species, sex swap

    Salmon implanted with trout reproductive tissue bred to produce a generation of normal rainbow trout.

    By Susan Milius
  7. Animals

    Hybrid Power: Salamander invader ups survival of rare cousin

    Mixed offspring of the endangered California tiger salamander and an invasive cousin survive better than either pure-bred species, raising tricky questions for conservationists.

    By Susan Milius

  8. Jungle Down There: What’s a kelp forest doing in the tropics?

    Kelp, algae that grow in cold water, turn out to be surprisingly widespread in tropical seas.

    By Susan Milius
  9. Health & Medicine

    Diabetes precursor may be checked by omega-3 fatty acids

    Omega-3 fatty acids in the diet might fend off diabetes in children prone to the disease.

    By Nathan Seppa
  10. Animals

    Smells Funny: Fish schools break up over body odor

    Just an hour's swim in slightly contaminated water can give a fish such bad body odor that its schoolmates shun it.

    By Susan Milius
  11. Paleontology

    The first matrushka

    A newly found fossil preserves one creature inside another that lies nestled inside yet another, a Paleozoic version of the Russian nesting dolls known as matrushkas.

    By Sid Perkins
  12. Health & Medicine

    Early Arrival: HIV came from Haiti to United States

    New analysis of 25-year-old blood samples indicates that HIV reached the United States in about 1969, 12 years before AIDS was first formally described.

    By Brian Vastag