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What you need to know about surgeon general's sun safety warning

Dr. Nancy Snyderman, NBC News’ chief medical editor, joins TODAY to talk about the nation’s top health official sounding the alarm about UV exposure after a sharp rise in skin cancer cases.

Dr. Nancy Snyderman, NBC News’ chief medical editor, joins TODAY to talk about the nation’s top health official sounding the alarm about UV exposure after a sharp rise in skin cancer cases.