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Articles in Feb 16, 2002 issue of Science News

• Itsy chain turns bitsy gears - researchers create microscopic chain drive - Brief Article
  by P. Weiss
• A new molecule and a new signature - Chemistry - tetranitrogen - Brief Article
• Vitamin void: heart disease may lurk in [B.sub.12] deficiency - Science news: this week - Brief Article
  by B. Harder
• Low birth weight matters later, too - Biomedicine - research indicates link between prematurity and academic achievement - Brief Article
• X-ray universe: quasar's jet goes the distance - NASA's Chandra X-ray Observatory discovers longest X ray-emitting jet ever found in distant galaxy - Brief Article
  by R. Cowen
• Women whiff men in sniff proficiency - Behavior - Brief Article
• Disorder decline: U.S. mental ills take controversial dip - Science news: this week - Brief Article
  by B. Bower
• Scientists make nanothermometer - Materials Science - Brief Article
• Biodiversity hot spots: top 10 sea locales make sobering list - Science news: this week - biologists identify world's most vulnerable coral reefs - Brief Article
  by J. Gorman
• Yellower blue tits make better dads - Biology - research on European bird species - Brief Article
• Cool discovery: menthol triggers cold-sensing protein - Science news: this week - Brief Article
  by J. Travis
• UV telescopes: one dead, one revived - Astronomy - Extreme Ultraviolet Explorer spacecraft plunges into Earth's atmosphere; Far Ultraviolet Spectroscopic Explorer improved - Brief Article
• A fair share of the pie: people everywhere put a social spin on economic exchanges
  by Bruce Bower
• Low down - Letters - Letter to the Editor
• Antibody warfare: vaccine halts microbes in dialysis patients - Science news: this week - vaccine against bacterium Staphylococcus aureus - Brief Article
  by N. Seppa
• Alzheimer's vaccine trial is suspended - Biomedicine - brain inflammation detected in several participants - Brief Article
• The hunger hormone? An appetite stimulant produced by the stomach may lead to treatments for obesity and wasting syndromes - research indicates hormone called ghrelin produces hunger
  by John Travis
• Warm tidings - Letters - Letter to the Editor
• Better stainless: analysis could bring pits out of the steel - Science news: this week - research on preventing pit corrosion in stainless steel - Brief Article
  by S. Perkins
• Tropical plants grow cool flowers - Botany - research indicates two tropical plants shift blooms toward sun - Brief Article