You probably think you're safety-minded. After all, you've child-proofed your house, double-checked your car seat, and taken all the recommended precautions. Still, many parents underestimate the special safety threats that summer brings, says Garry Gardner, M.D., a pediatrician in Darien, IL, and member of the American Academy of Pediatrics' Injury and Poison Prevention Committee. "Kids are spending the bulk of their time outside, which raises their risk of getting hurt," he says. To learn how to keep your kids healthy this summer, Child tracked down leading experts on five summer hot spots where injuries most often occur -- playgrounds, amusement parks, water parks, public swimming pools, and beaches. Don't expect the typical advice; what they have to say will surprise -- even shock -- you.