Humans

  1. Animals

    Hot tail gives warning

    Ground squirrels can heat up their tails to signal and perhaps taunt rattlesnakes.

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  2. Psychology

    Roller coaster thrills

    Riding roller coasters is about the need that some people have to seek thrills and take risks.

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  3. Humans

    Traces of Ancient Campfires

    Researchers have unearthed traces of what may be among the oldest human-controlled fires.

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  4. Health & Medicine

    Workouts: Does Stretching Help?

    Stretching before exercise or sports may not improve performance or reduce the chance of injury.

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  5. Humans

    Hints of Life in Ancient Lava

    Ancient lava may contain some of the earliest traces of life on Earth.

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  6. Animals

    Male baboons get mellow

    Females may get male baboons to tone down violent behavior and become more cooperative.

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  7. Animals

    Snagging insects, hummingbird style

    A hummingbird has an unexpectedly flexible lower bill to help it catch bugs.

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  8. Humans

    The taming of the cat

    People had pet cats at least 9,500 years ago, long before ancient Egyptians started worshipping felines.

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  9. Health & Medicine

    Allergies: From bee stings to peanuts

    As more and more people develop allergies, researchers are looking for ways to treat and prevent severe allergic reactions.

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  10. Animals

    Ganging up to grab more food

    Food-snitching birds may drive wolves to hunt in large packs.

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  11. Animals

    Some birds heed a monkey’s warnings

    An African forest bird can tell which monkey alarm calls to pay attention to.

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  12. Health & Medicine

    Moving Good Fats from Fish to Mice

    Healthful fats from fish could end up in beef, eggs, and other foods.

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