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  1. Life

    New gut-dwelling virus is surprisingly common

    It’s not clear yet whether the bacteriophage crAssphage, found in people’s intestines, has any health effects.

    By Tina Hesman Saey
  2. Science & Society

    ‘Enlightening Symbols’ shows how math’s language arose

    From numerals to infinity, symbols have advanced mathematical thinking.

    By Tom Siegfried
  3. Health & Medicine

    ‘NOVA’ takes science’s side in vaccine debate

    A TV documentary dissects concerns about vaccinations and spells out the science supporting their use.

    By Nathan Seppa
  4. Life

    Feedback

    Readers discuss Dulles' microscapes exhibit, baby birthweights and what should be done about the triclosan problem.

    By Science News Staff
  5. Earth

    Sometimes value lies deep below the surface

    Stories on jellyfish, Ebola, carbon capture's future and heart disease's past reveal how crises old and new often lead to science's healthiest advances.