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  1. Physics

    Light Pedaling: Photonic brakes are vital for circuits

    A novel silicon microchip device slows and varies light-pulse speeds—a function considered critical for the development of photonic circuits based on light instead of electrons.

    By Peter Weiss
  2. Health & Medicine

    More Than an Annoyance: Breathlessness could be sign of bigger problems

    People who have dyspnea, the sensation of being frequently out of breath, may have an increased risk of dying from heart problems.

    By Nathan Seppa
  3. Planetary Science

    New Partners: Hubble finds more moons around Pluto

    Astronomers using the Hubble Space Telescope have spied two tiny moons orbiting Pluto, giving this planet a total of three satellites.

    By Ron Cowen
  4. Humans

    Letters from the November 5, 2005, issue of Science News

    Wind or fury? (“The Wind and the Fury” (SN: 9/17/05, p.