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Articles in May 9, 1992 issue of Science News

• Nay-sayers play down greenhouse threat
• Enzymes under glass - sensor research - Brief Article
  by Elizabeth Pennisi
• Getting a grip on HIV's crucial enzyme - reverse transcriptase - Brief Article
  by Carol Ezzell
• Tracking HIV in psychiatric patients - Brief Article
• New crystal makes paper bright - calcium carbonate - Brief Article
• Ozone layer succumbs to assault - NASA research
  by Richard Monastersky
• Turkish tin mine revises Bronze Age history - ore discovered at Goltepe
  by Elizabeth Pennisi
• Prozac's effects on pregnancy and diabetes - fluoxetine
  by Carol Ezzell
• Generating chemical spots and stripes - patterns on mammal coats
  by Ivars Peterson
• Breathing lessons - teaching a lung model to breathe by computer - Cover Story
  by Michael Stroh
• Cancer support-group data challenged - research conducted by David Spiegel of Stanford School of Medicine is questioned - Brief Article
• Tamoxifen trial begins amid new concerns - Brief Article
  by Janet Ratloff
• Diaphragm and sponge protect against STDs - sexually transmitted diseases
  by Kathy A. Fackelmann
• Celery studies yield blood pressure boon - 3-n-butyl phthalide chemical contained in celery - Brief Article
  by Carol Ezzell
• Eat eggs and cut your cholesterol, too - reduced fat eggs - Brief Article
  by Carol Ezzell
• Ice crystal growth: an electric finding - Brief Article
  by Michael Stroh
• Brother Stroop's enduring effect - J. Ridley Stroop, experimental psychology
  by Bruce Bower