If you live in the northern hemisphere you think about the light, at this time of the year especially. The light is beginning to change and for those who are particularly light sensitive there is hope that winter will end and spring will come even if it is still cold.
This was an interesting visual representation of our Vitamin D needs done by David McCandless. Again I admit that I am a sucker for these visual displays of information as clever ways to convey important data.
Here’s Jane Brody’s take on it from the New York Times.
The Curious Autodidact 
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