View full lesson: http://ed.ted.com/lessons/whydoweh...
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. Wrinklecausing UVA rays and burninducing 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.