Science News

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Articles in August 3, 1991 issue of Science News

• Panel backs DDI despite uncertainties - Food and Drug Administration panel recommends approving AIDS drug didanosine
• Experts urge funding for artificial heart - National Heart, Lung, and Blood Institute
• Weather report: NASA GOES astray - mismanagement of the GOES-NEXT weather satellite program
  by Ron Cowen
• Cancer treatment uses 'suicide' gene - thymidine kinase gene developed as therapy
  by John Travis
• Maleness gene may be master gene switch - can turn other genes involved in sexual development on or off
  by Carol Ezzell
• Gallium stabilizes new superconductor
• Hidden ducts fan radon threat - duct systems can increase radon concentrations in the home
  by Janet Raloff
• Iron swells up when squeezed with hydrogen - discovery that iron hydride can exist under high pressure suggests that it may be present at the Earth's core
  by Elizabeth Pennisi
• Fossil pond plants bear tattoo of K-T crash - evidence of a meteorite impact at the Cretaceous-Tertiary boundary
  by Richard Monastersky
• The luck of the four-leaf zeolite - new, larger form shaped like a four-leaf clover and called 'cloverite'
• Chilling fails to open Galileo antenna - spacecraft
• Ancient ax helps date early Greeks - discovery of a flint hand-ax confirms that early Stone Age human ancestors lived in Greece
  by Bruce Bower
• Plastic math: growing plastic models of mathematical formulas - Cover Story
  by Ivars Peterson
• Dancing DNA: tripping the light fantastic with heredity's master molecules - using fluorescence microscopy to image the DNA molecule
  by Elizabeth Pennisi
• Polymer shifts light in two directions - using an electric field to transform an organic polymer that can alter light
• Drug proves ace at fighting heart failure - angiotensin-converting enzyme
  by Kathy A. Fackelmann
• Teflon grid brings order to thin films - Teflon with molecules in well-ordered rows
  by Elizabeth Pennisi
• Elevated radon risk for passive smokers - lung cancer
  by Janet Raloff