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Is Obama's Energy Plan Enough?

Renewable-energy leaders call for far-reaching federal action: providing rebates to green investors, mandating electricity from alternative sources and revamping the grid.

Fit Nation

Run for Your Lives

Dust off those sneakers. Data from a long-term study show jogging slows the effects of aging

MEDICINE

Is Asthma Overdiagnosed?

As many as one-third of asthma patients age 16 and over may not actually have the chronic disease, according to a study published in the Canadian Medical Association Journal

SKIMMER

Gulf War Illness

The latest report on the health of Gulf War veterans, released by a congressionally mandated panel, details how the U.S. military mistakenly poisoned its own soldiers with two chemicals during Operation Desert Storm

A BRIEF HISTORY OF

The Great American Smokeout

The day The American Cancer Society challenged smokers across the country try to do what feels impossible — give up their cigarettes for 24 hours

SPACE

Planet Earth: An Illustrated History

A stunning new photography book captures the natural miracles of the world we live in

Q&A

Fast Food's Secret: Corn

TIME talks with University of Hawaii researcher Hope Jahren about where your Big Macs, Whoppers and Quarter-Pounders really come from

Quotes of the Day »

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EDUARDO MEDINA, the Attorney General of Mexico on executing Mexican President Felipe Calderon's nationwide crackdown on the drug trade