Your skin can be damaged by the sun's ultraviolet rays in as little as 15 minutes. Protect your skin: http://go.usa.gov/cJnWz #DontFryDay
#SkinCancer is the most common cancer in the US. If you're spending time outdoors, use sunscreen & try to stay in the shade. #DontFryDay
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Good news: we are immune to tail of the distribution of photon energy and impact -- for 15 minutes
@Surgeon_Generalhttps://twitter.com/Surgeon_General/status/736216771619917824 … - 2 more replies
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as a heart transplant recipient this is a very important part of life
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