Mind & Body

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

A Matter of Taste

Are you a superstar? Just stick out your tongue and say "yuck"

Gimzewski uses an atomic force microscope (above, atop a bone cell) to "listen" to living cells.

Signal Discovery?

A Los Angeles scientist says living cells may make distinct sounds, which might someday help doctors "hear" diseases

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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

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Prize Fight

Raymond Damadian refuses to take his failure to win a Nobel Prize, for a prototype MRI machine, lying down

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Hooked on Aging

Our writer tries to just say no to getting older

Neuroscientist Eugene Aserinsky attaches electrodes to his son, Armond, who was a frequent subject in his early sleep studies

The Stubborn Scientist Who Unraveled A Mystery of the Night

Fifty years ago, Eugene Aserinksy discovered rapid eye movement and changed the way we think about sleep and dreaming

Six weeks after authorities said SARS had broken out in Asia, CDC scientists in Atlanta identified a coronavirus as the culprit.

Stopping a Scourge

No one knows if SARS will strike again. But researchers' speedy work halting the epidemic makes a compelling case study of how to combat a deadly virus

Shoe-fitting fluoroscope, National Museum of American History.

Here's Looking at You, Kids

For three decades, the fluoroscope was a shoe salesman's best friend

"I had a bunch of birds that had died of encephalitis at the same time people had encephalitis," says Tracey McNamara (in her Bronx apartment), a veterinary pathologist formerly at the Bronx Zoo. She helped link the virus to the 1999 epidemic.

On the Trail of the West Nile Virus

Some scientists race to develop vaccines against the scourge while others probe the possible lingering effects of the mosquito-borne infection

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The Stuff of Genes

Fifty years after the discovery of DNA's structure, the payoff hasn't matched the hype. But really, we've only just begun

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Mission Impossible?

An international campaign to rid the world of polio has made dazzling progress. But some experts question whether the scourge can ever be eradicated

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?

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Stimulants

Both ginseng and dolphins evoke passionate emotions

Birdbrain Breakthrough

Startling evidence that the human brain can grow new nerves began with unlikely studies of birdsong

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Hero for Our Time

Challenged to prove his germ theory of disease, Louis Pasteur shaped the terrain on which the battle against anthrax is being fought

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

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Review of GERMS: Biological Weapons and America's Secret War

Review of GERMS: Biological Weapons and America's Secret War

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The Way of Confucius

In a remote corner of eastern China, travelers tread the path of the ancient sage

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Harmonious Cord

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