Genetics

Building A Better Banana

It is the world's No. 1 fruit, now diseases threaten many varieties, prompting a search for new hybrids of the "smile of nature"

Researchers study identical twins—who develop from a single egg that splits after fertilization and therefore have the same genes—to learn how genes influence traits of predispose people to disease.

Twin Science

Researchers make an annual pilgrimage to Twinsburg, Ohio, to study inherited traits

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Kenyon's Ageless Quest

A San Francisco scientist's genetic research renews the ancient hope for a way to slow aging

Grace Levy, 95, of Lunenburg, quit school at 13 to clean houses: "My Dad said you've gotta work."

Puzzle of the Century

Is it the fresh air, the seafood, or genes? Why do so many hardy 100-year-olds live in yes, Nova Scotia?

Endothelial cells under the microscope

Brave New World

Everything you wanted to know about stem cells, cloning and genetic engineering but were afraid to ask

Gene therapy

Betting on Designer Genes

Scientists dream of giving people new genes that will stop a disease or fix a problem. It is harder than anyone thought

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