Craftster is such a great place to find nerdy crafts. Back in 2008 they had a Science IS Art swap that had amazing gallery–which included the greatest scarf of all time: the DNA Scarf. Superhooker made it for her partner (along with other great stuff) and it quickly became a popular topic. Last year I was the lucky recipient of one, and I love it! The pattern is here, so you can have your own!