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Articles in April 26, 2003 issue of Science News

• SARS virus' genome hints at independent evolution - Out of China - severe acute respiratory syndrome
  by B. Harder
• Cracking the Genome: Inside the Race to Unlock Human DNA. - book review
• Mutation causes early-aging syndrome - Genetic Clue to Aging? - Hutchinson-Gilford progeria syndrome
  by J. Travis
• Little vessels react to magnetic switch - Biomedicine - research indicates blood vessels respond to magnets - Brief Article
• Know your limits - Letters - Letter to the Editor
  by Marian K. Stanley
• Cracking the puzzle of elastic solids' toughness - Blunt Answer
  by P. Weiss
• Teen taters, too - Epidemiology - research links teenage obesity to insufficient physical activity - Brief Article
• Rain forests may slow their growth in warmer world - Feel the Heat
  by S. Perkins
• Traces of lead cause outsize harm - Environment - research indicates minute traces of lead in blood harm children - Brief Article
• Secret Agents: the Menace of Emerging Infections. - book review
• Eye of the tiger: discovery about gem's structure overturns old theory - research indicates tiger's-eye chatoyancy arises from crocidolite fibers
  by Sid Perkins
• Dr. Tatiana's Sex Advice to All Creation: the Definitive Guide to the Evolutionary Biology of Sex. - book review
• Classic partnership isn't so tidy after all - Fig-Wasp Upset - research indictes two species of wasp pollinate fig species
  by S. Milius
• Chicks open wide, ultraviolet mouths - Zoology - researchers use ultraviolet reflection to study colors of mouths of baby birds - Brief Article
• Prehistoric America: a Journey Through the Ice Age and Beyond. - book review
• New material responds to growing tissue - Bone Fix - researchers using synthetic polymers as scaffolding materials to encourage growth of bone tissues
  by J. Gorman
• Athletes develop whey-better muscles - Physiology - research indicates dietary supplements that combine creatine with whey proteins have muscle-building benefits - Brief Article
• Elephants, donkeys, and rats - Letters - Letter to the Editor
• Ancestors go South - Australopithecus fossils found in South Africa date to 4 milion years ago - Brief Article
  by B. Bower
• Prenatal nicotine: a role in SIDS? - Environment - sudden infant death syndrome - Brief Article
• Live wire - Letters - Letter to the Editor
  by Peter L. Nelson
• A rocky start: fresh take on life's oldest story - iron sulfide theory for origin of life
  by Kendall Morgan
• How to Build a Time Machine. - book review
• Solid proof offered for famous conjecture - Spheres in Disguise - Grigori Perelman proves Poincare conjecture
  by E. Klarreich
• Digital cells: computer circuits made of genes may soon program bacteria
  by Erica Klarreich
• Political Numeracy: Mathematical Perspectives on Our Chaotic Constitution. - book review