(A third type of rays, ultraviolet C, is intercepted by Earth's ... That's not nearly enough to make sunscreen unnecessary. Besides, a tan itself is a sign of sun damage. "When our skin is exposed ...

You know, a tan is temporary, but your skin never forgets. "I'm covered -- I applied sunscreen on my face, arms, and legs." Jeremy Brauer: You're not covered. "Getting sunburned once is harmless." ...