1. Health & Medicine

    Chew for Health

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

  2. Humans

    Earth Rocks On

    Some rocks in Greenland show that Earth's crust was moving even 3.8 billion years ago.

  3. Health & Medicine

    Wake Up, Sleepy Gene

    Variation in the length of one gene affects how well you function when short of sleep.

  4. Health & Medicine

    Childhood’s long history

    Our ancient ancestors had long childhoods, just as we do today.

  5. Health & Medicine

    A fix for injured knees

    A new way of repairing a common knee injury might someday help athletes recover faster.

  6. Humans

    Stonehenge settlement

    The remains of a prehistoric village lie near the legendary stone circle in England known as Stonehenge.

  7. Health & Medicine

    Eat Out, Eat Smart

    Knowing the number of calories in your restaurant meal can help you make healthier food choices.

  8. Humans

    Island extinctions

    Many of Australia's largest animals died out after people came to the island continent.

  9. Health & Medicine

    Smiles Turn Away Colds

    A good mood and a relaxed attitude help keep colds away.

  10. Health & Medicine

    Hot Pepper, Hot Spider

    Hot peppers and spider venom can cause the same sort of painful burning sensation.

  11. Health & Medicine

    Disease Detectives

    This year's top young scientists faced medical challenges in labs at the National Institutes of Health.

  12. Humans

    Oldest Writing in the New World

    Signs carved into a stone slab may represent the earliest known writing in the Americas.