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  1. Health & Medicine

    A link between emotional stress and heart attacks

    In some people with heart disease, a stressful event precipitates changes in blood components and flow that may trigger a heart attack.

    By Nathan Seppa
  2. Planetary Science

    Pluto’s posse

    Images taken by the Hubble Space Telescope on Feb. 15 confirm that Pluto has two small, previously unknown moons.

    By Ron Cowen
  3. Health & Medicine

    Indigestion drug makes headway

    An experimental drug relieves symptoms of a form of chronic indigestion called functional dyspepsia better than a placebo does.

    By Nathan Seppa
  4. Astronomy

    Peeling Back Orion’s Layers

    By studying the most detailed portrait ever assembled of the Orion nebula, astronomers hope to glean new insights about star birth throughout the galaxy.