An audio slideshow chronicles Norman Borlaug's lifelong efforts to defeat a plant pathogen called stem rust. This fungus threatens wheat production, especially in the developing world. Narrated by Science reporter Erik Stokstad, the slideshow features interviews with Borlaug and other scientists about a new race of fungus and research to create resistant varieties of wheat.

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Fifteen years ago, Florida panthers were in a world of hurt. Only about two dozen of the beleaguered predators roamed in southern Florida, and because of inbreeding they suffered from heart defects, reproductive problems, and other maladies. Scientists calculated that there was a 95% chance that the panthers would die out within 20 years if nothing was done.

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