Youtor
Why do we have to wear sunscreen Kevin P Boyd
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=ZSJITdsTze0
View full lesson: http://ed.ted.com/lessons/why-do-we-h... • You already know that a trip to the beach can give you a nasty sunburn, but the nitty gritty of sun safety is actually much more complex. Wrinkle-causing UVA rays and burn-inducing UVB's can pose a serious risk to your health (and good looks). So what can you do? Kevin P. Boyd makes the case to slap on some physical or chemical SPF daily. • Lesson by Kevin P. Boyd, animation by Andrew Foerster.
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