In clinical circles, it's questionable at best whether excessive sun exposure leads directly to skin cancer. And it's also well-known that few skin cancers are fatal. But a new public service announcement, paid for by a sunscreen maker, is raising eyebrows with ads implying that excess exposure leads frequently to skin cancer and death. Physicians are questioning the ad's aggressive approach, aimed at women ages 20 to 48 who spend time in the sun. Article