Science writer and Flickr user Carl Zimmer has gathered up over 140 photos of scientific tattoos. Started by readers of his science blog, The Loom, his collection has been running around the Nets picking up nerdy tats from all corners and will happily eat up long swaths of your time. Exactly how dedicated are you to Fibonacci, Copernicus, and Galileo? What would you like encoded in your double-helix? Got a favorite physics formula, circuit board, nerve cluster, or molecular diagram? You're not alone.
Browse the whole Flickr gallery here.