America the Fit
Childhood obesity is nothing short of an epidemic. A study released last month revealed that nearly a third of America's kids are overweight or obese--and, amazingly enough, the media seemed to consider that good news since the figures were leveling off slightly. (That's like in Washington, where a decrease in the rate of spending is considered a cut.) The problem is very far from going away.
But there is some hope, as this special issue of TIME shows. Investigators are learning how everything from family income to ethnicity to geography helps determine which kids become overweight and which...