Humans

  1. Life

    Stem cells: The secret to change

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

    By Alison Pearce Stevens
  2. Health & Medicine

    Deadly new virus emerges

    A mysterious infection has been spreading for almost a year.

    By Janet Raloff
  3. Health & Medicine

    The AIDS virus that vanished

    Strong medicine may have rid a newborn of deadly HIV.

    By Stephen Ornes
  4. Environment

    Bad for breathing

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

    By Stephen Ornes
  5. Animals

    Cool Jobs: Museum science

    Samples collected long ago may hold answers to important questions in science and medicine today.

    By Sharon Oosthoek
  6. Brain

    Concussion: More than ‘getting your bell rung’

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

    By Alison Pearce Stevens
  7. Archaeology

    The return of a king

    The 15th century’s Richard III has returned — or at least, his bones have.

    By Stephen Ornes
  8. Health & Medicine

    Sleeping in space

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

    By Stephen Ornes
  9. Health & Medicine

    Getting a grip

    Wrinkled fingers seem to be an advantage in wet environments.

    By Stephen Ornes
  10. Health & Medicine

    Ebola in the air

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

    By Stephen Ornes
  11. Brain

    Baby’s stress can last decades

    Early stress may impair adult behavior, especially in girls.

    By Stephen Ornes
  12. Health & Medicine

    Healthier mice, through X-rays

    In sickly mice, small doses of radiation helped while vitamins harmed.

    By Stephen Ornes