Carl Zimmer's Science Tattoo Emporium

I (a science writer) wondered aloud if scientists had tattoos of their science. The answer was yes, and this site is the evidence. I'll be adding a new tattoo every day until I run out (if that day ever comes). If you want to share your own scientific ink, send it to me with some explanation.

And they did -- their fractals, molecules, equations and engravings, lots of DNA, neurons and a heart. The one-offs are numerous, and include the Philosopher's Stone, the plaque on the Pioneer spacecraft, and "a schematic diagram of a basic Crystal Radio taken from page 132 of Practical Wireless Telegraphy by Elmer Bucher published in 1921.""

Some are incredibly detailed, some are boring, but they're all... smart.