By now, we've all received the dire e-mails warning that drinking bottled water left in the car causes cancer. First, when has a chain e-mail ever been a reliable source of health info? Second, we talked to experts at Johns Hopkins, the FDA, American Plastics Council, and others, and it turns out that the accused chemicals (DEHA, dioxin, bisphenol-A, phthalates) aren't even in plastic water bottles and that any "migrants" from the bottles are "within the margin of safety." You want to lower your cancer risk? Stop smoking, eat right, and exercise.