Today's morsel of knowledge, short but sweet, you can't get a tan through glass. True story. I like to think of myself as a fairly intelligent person but I just learned this a couple years ago, and was reminded of it last week when my office was turning into a sauna and I was thinking that if I wore less clothes to work I could darken my skin tone...damn you physics. Also can't get your daily dose of vitamin D so get your booty outside.
I know what you are thinking, what about tanning beds? The light bulb is glass, you lay on glass, so what gives? Special super-expensive plexi-like glass that lets all the UV wavelengths through (and doesn't break as easily so obese people can lay on it without fear of glass shards slicing them).
