Health & Medicine

  1. Microbes

    Deadly new flu

    The germ responsible carries genes from other flu viruses.

    By Stephen Ornes
  2. Animals

    Infectious animals

    Critters spread many germs that can sicken each other — and even kill people.

    By Amanda Leigh Mascarelli
  3. Animals

    Explainer: People can sicken animals

    Wildlife can sometimes become infected with germs shed by people.

    By Amanda Leigh Mascarelli
  4. Life

    Stem cells: The secret to change

    Unusual, versatile cells hold the key to regrowing lost tissues.

    By Alison Pearce Stevens
  5. Health & Medicine

    Deadly new virus emerges

    A mysterious infection has been spreading for almost a year.

    By Janet Raloff
  6. Health & Medicine

    The AIDS virus that vanished

    Strong medicine may have rid a newborn of deadly HIV.

    By Stephen Ornes
  7. Environment

    Bad for breathing

    New study connects pollution to several common diseases that affect the lungs and airways.

    By Stephen Ornes
  8. Brain

    Concussion: More than ‘getting your bell rung’

    This common brain injury can cause serious — and lasting — damage.

    By Alison Pearce Stevens
  9. Health & Medicine

    Sleeping in space

    Volunteers face problems on a make-believe mission to Mars.

    By Stephen Ornes
  10. Health & Medicine

    Getting a grip

    Wrinkled fingers seem to be an advantage in wet environments.

    By Stephen Ornes
  11. Health & Medicine

    Ebola in the air

    A deadly virus can spread through the air from pigs to monkeys.

    By Stephen Ornes
  12. Brain

    Baby’s stress can last decades

    Early stress may impair adult behavior, especially in girls.

    By Stephen Ornes