Humans

  1. Health & Medicine

    Which bacteria hang out in belly buttons? Here’s a who’s who

    Bacteria are everywhere — even in our belly buttons. One teen at Intel ISEF decided to find out what types people were harboring in their navels.

    By Bethany Brookshire
  2. Life

    Inked mice hint at how tattoos live on

    Tattooed mice challenge our current understanding of how tattoos stay in humans.

    By Dan Garisto
  3. Health & Medicine

    Obesity makes taste buds disappear — in mice, anyway

    Mice that gained excessive weight on a high-fat diet also lost one in four taste buds.

    By Aimee Cunningham
  4. Health & Medicine

    Scientists Say: Nocturnal and diurnal

    Nocturnal animals are active at night. Diurnal animals live it up during the day.

    By Bethany Brookshire
  5. Environment

    Dirty air can harm your brain and stress the body

    New research shows that polluted air can mess with the bodies — including the brains — of even healthy kids and teens.

    By Lindsey Konkel Neabore
  6. Psychology

    2016 election stressed out some teens and young adults

    Some teens and young adults felt stress, anxiety and fear during the 2016 election — no matter what political candidates they tended to prefer.

    By Alison Pearce Stevens
  7. Health & Medicine

    Scientists offer new explanation for knuckle-cracking

    That annoying pop may come from the partial collapse of bubbles in the joint fluid.

    By Emily Conover
  8. Computing

    Computers mine online reviews for signs of food poisoning

    Health officials are getting help in identifying restaurant goers who got food poisoning by teaching computers to scout social-media posts for signs of illness.

    By Allie Wilkinson
  9. Psychology

    Analyze This: The power in being understanding of your flaws

    Expecting nothing but perfection from yourself can lead to depression. Forgiving yourself after mistakes can lower your risk of feeling bad, a new study finds.

    By Allie Wilkinson
  10. Environment

    Light at night lengthens how long birds can spread West Nile virus

    Light at night prolongs the time it takes these birds to knock out a West Nile infection. Mosquitoes that bite them during this time can pick up and spread their virus to others — even people.

    By Susan Milius
  11. Animals

    Compared to other primates, humans get little sleep

    Short bouts of a sleep, called REM, separate humans from other primates, scientists find. Sleeping on the ground may have a lot to do with it.

    By Bruce Bower
  12. Health & Medicine

    Scientists Say: Lactose

    You might not think of dairy products having sugar, but they do. Milk is rich in a sugar called lactose.

    By Bethany Brookshire
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