Last fall the Loom was awash in tattoos from scientists. Since then, I've moved them over to my Science Tattoo Emporium. If you haven't checked it out recently, let me invite you over. Incredibly, someone sends me a new science tattoo just about every day. I post them as fast as I can, but I've still got a backlog. And most of them are astonishingly cool--both beautiful and enlightening. I particularly like today's post, today's post, an homage to Darwin's finches. Plenty more where that came from.