A lesson in laser safety from the Salk Institute

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I'm in San Diego through Monday, attending the American Association for the Advancement of Science conference. This pic comes direct from the lab tours I went on Wednesday afternoon. Starting Thursday, I'll be updating you with highlights from this annual gathering of the world's largest general scientific society. Or, at least, the highlights I get to see. One of the wonderful/frustrating things about AAAS is that there always seems to be at least three lectures I'd love to hear running simultaneously. Together, we'll learn some cool stuff this week—and still only scratch the surface.