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Articles in April 17, 2004 issue of Science News

• A Brief History of the Mind: from Apes to Intellect and Beyond
• Male baboons cooperate after cultural prodding
  by Bruce Bower
• A drug to stop diabetes' onset?
• Wave reaction
  by Harry Higgins
• Shades of Venus: our neighbor in the solar system holds a lantern on faraway planets
  by Ron Cowen
• The Kids Book of the Night Sky
• Tick-semen protein is potential vaccine
  by Edna Francisco
• Rock-solid choices of first toolmakers
• Nanotubes take on the Grand Canyon
• Degrees Kelvin: a Tale of Genius, Invention, and Tragedy
• Crab's X rays probe Titan
  by Ron Cowen
• Flame-retardant cotton gets a boost from clay
• Reinventing the yo-yo: a simple toy gets seriously techno
  by Peter Weiss
• Lab 257: the Disturbing Story of the Government's Secret Plum Island Germ Laboratory
• Hormone boosts metabolic rate, induces weight loss in mice
  by John Travis
• Israeli cave yields Stone Age kills
• Audubon's Elephant: America's Greatest Naturalist and the Making of The Birds of America
• Model may predict El Nino up to 2 years in advance
  by Sid Perkins
• Bacteria churn out new type of electronic paper
• Sphere criticism
  by Marc Gurevitch
• Gene activity predicts leukemia outcome
  by Ben Harder
• Sizing up a black hole
• Myth of sterility
  by Edward P. Tryon
• RNA manufactures palladium particles
  by Alexandra Goho
• Drug for preemies linked to problems