“I am a biochemist, studying to be a molecular biologist, and the tattoo I am sending is the entry for carbon on the periodic table of elements. Since all living things on this planet at least are carbon based, from a chemical standpoint, it doesn’t get much more basic than carbon. Hence the tattoo.” –Erin

The call for science tattoos has brought 81 images now. After two months, they keep coming. 

Originally published October 19, 2007. Copyright 2007 Carl Zimmer.