Humans

  1. Health & Medicine

    A recipe for happiness

    Want to be happier? Recent studies show that science can help.

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  2. Humans

    Ancient cave behavior

    In a South African cave, scientists have found the oldest evidence of people acting like modern humans.

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  3. Humans

    A Long Haul

    A new study of stone tools suggests that ancient Polynesian sea voyagers traveled thousands of miles in their canoes.

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  4. Health & Medicine

    The buzz about caffeine

    Is caffeine bad or good for you? The answer is: a little of both.

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  5. Health & Medicine

    Toxic Dirt + Avian Flu = Science Fair Success

    Fifteen-year-old Nolan Kamitaki shows what it takes to become one of America's top young scientists.

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  6. Health & Medicine

    The electric brain

    Electrical implants allowed a brain-damaged man to talk, eat, and move again.

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  7. Humans

    Chicken of the Sea

    Chickens may have crossed the Pacific Ocean along with early Polynesian explorers.

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  8. Health & Medicine

    A big discovery about little people

    Humans may have once walked the Earth with tiny people—a possible newly discovered species that scientists have nicknamed "hobbits."

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  9. Health & Medicine

    Don’t Eat That Sandwich!

    If you drop a sandwich on the floor, how quickly does it pick up bacteria?

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  10. Health & Medicine

    A Better Flu Shot

    A new kind of vaccine that's made in caterpillar cells prevents influenza.

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  11. Humans

    A Long Trek to Asia

    An ancient skeleton from a Chinese cave shows how far humans walked when they left Africa.

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  12. Health & Medicine

    Chew for Health

    Surprise your teacher: New studies show that chewing gum might be good for you!

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