I made this image in 2004 because I saw the need for a sticker that was amusing and pro-science without being at all anti-religion (I dislike the evofish). The design is based on the André the Giant Has A Posse billboard (and stickers) that Shepard Fairy created while he was an undergrad at the Rhode Island School of Design. I was a graduate student at Brown University (also in Providence) at the time, so I got to appreciate his project. I asked him whether he’d mind, and he didn’t.
If you need a sticker, t-shirt, or whatever, I put the image on Redbubble.
Darwin Posse mug 
Darwin Posse t-shirt 
Darwin Posse tote 
Darwin Posse laptop skin 
Darwin Posse sticker