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  1. Health & Medicine

    Hidden Damage: Parkinson’s harm to nerves in heart may explain dizziness and fainting

    Parkinson's disease patients have damaged nerve endings in the heart, kidneys, and thyroid gland, suggesting the disease harms the autonomic nervous system that regulates involuntary functions of these and other organs and glands.

    By Nathan Seppa
  2. Astronomy

    Heavenly Taffy: Galaxies in collision

    Astronomers have discovered a pair of colliding galaxies connected by a bridge of high-speed electrons and elongated magnetic fields.

    By Ron Cowen
  3. Chemistry

    Minimotor: Single molecule does some work

    A single molecule has performed mechanical work—pulling and releasing a cantilever tip—when exposed to light.

    By Jessica Gorman
  4. Physics

    Unexpected Boost: A superconductivity killer’s silver lining

    Among superconductors—materials able to conduct electricity without resistance—an effect that normally diminishes current-carrying ability surprisingly turns out to sometimes enhance it.