Is sunshine good for you?

"Is sunshine good for you?" is the latest Ask a ScienceBlogger question and Nick Anthis did a great job answering it - focusing on the circadian aspects of the need for sunlight - in his response here. Excellent and quite correct, if I may say so, (and I had trouble commenting on his blog, so I'll put it here) except perhaps the details of the Viagra paper.

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For this round of Ask a ScienceBlogger, the question is "Is sunshine good for you?" It's a beautiful sunny day outside. And, of course, you're stuck in the lab (or the office, classroom, or daily holding tank of your choice). Although you may thumb your nose at those who seem to have nothing…
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