Humans

  1. Health & Medicine

    Are fidget spinners tools or toys?

    Fidget spinners are all the rage. Therapists say toys such as these can help some kids calm down and pay attention.

    By Kathryn Hulick
  2. Environment

    Tiny air pollutants inflame airways and harm heart

    New studies show how tiny bits of air pollution, called particulate matter, can lead to health problems ranging from chronic runny noses to heart disease.

    By Kathiann Kowalski
  3. Tech

    Needle-free blood typing may be on the way

    A teen in Kuwait presents data suggesting how, one day, it may be possible to figure out your blood type just by shining infrared light into your skin.

    By Sid Perkins
  4. Health & Medicine

    A light-filled box could blast bacteria from lab coats

    Doctors can pick up bacteria on their lab coats. A teen has designed a special light-filled box to keep those coats from infecting others with those germs.

    By Bethany Brookshire
  5. Chemistry

    Cool Jobs: Counting calories

    Do calories count? A nutrition label doesn’t tell the whole story. Meet three researchers working to shed light on the complex connections between food and health.

    By Kathryn Hulick
  6. Health & Medicine

    Explainer: All about the calorie

    Calories are a measure of how much energy is in a food. But when it comes to powering our bodies, not all calories are equally available to the body.

    By Kathryn Hulick
  7. Brain

    Analyze This: Sleep patterns vary widely across the world

    Data on four very different groups of people show that sleep patterns vary based on the local environment, the culture and daily schedules.

    By Lillian Steenblik Hwang
  8. Health & Medicine

    This mix turns pink when sunscreen wears thin

    Many people know to put on sunscreen. Remembering to put more on is harder. A teen invented an indicator that glows pink when it’s time to reapply.

    By Bethany Brookshire
  9. Health & Medicine

    Teens take on science in the age of smartphones

    With nearly every teen using a smartphone, it’s no surprise teen scientists are studying them. Two teams do science with smartphones, one on procrastination, the other on self-esteem.

    By Bethany Brookshire
  10. Environment

    Some food-packaging pollutants mess with the thyroid

    Chemical pollutants may hurt the ability of the thyroid gland to make an important hormone. Teens may be most at risk.

    By Lindsey Konkel Neabore
  11. Health & Medicine

    Library books could come with a side of germs

    People transfer microbes to most of the things we touch. Does that extend to our library books? A teen did an experiment to find out.

    By Bethany Brookshire
  12. Archaeology

    America’s first settlers may have arrived 130,000 years ago

    An archaeological site where mastodon remains were found suggests that the first Americans may have arrived unexpectedly early.

    By Bruce Bower
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