1. Environment

    Fear Matters

    Halloween can scare kids and make them act strange. But animals and ecosystems respond to fear every day of the year.

  2. Environment

    Acid snails

    Changing chemistry in the world's oceans could affect the ability of a snail to defend itself.

  3. Agriculture

    Flush-free fertilizer

    Scientists have found a new use for human urine — as a potent crop fertilizer.

  4. Ecosystems

    Underwater jungles

    Cold-water-loving kelp forests may be surprisingly abundant in the tropics.

  5. Environment

    Lessons from a lonely tortoise

    In the Galapagos Islands, scientists are struggling to save some of the most endangered creatures in the world.

  6. Animals

    Polar bears in trouble

    Melting ice is bad news for polar bears that live in northern Alaska.

  7. Climate

    The best defense is a good snow fence

    Science fair superstar Erica David shows how fences that trap snow can help the environment.

  8. Climate

    Catching some rays

    In a world with increasing energy needs, scientists are turning to plants for help in using solar power.

  9. Climate

    A stormy history

    The number of severe hurricanes in recent years may be normal, it turns out.

  10. Environment

    Where have all the bees gone?

    More than one-fourth of the honeybees in the United States have disappeared since last fall, and scientists are trying to figure out why.

  11. Climate

    Earth’s poles in peril

    Scientists are paying increased attention to changes in Earth's polar regions, which are in danger because of global warming.

  12. Animals

    Life on the Down Low

    The first scientific survey of organisms in the deep waters off Antarctica has discovered lots of life.