This was inspired by a Nature article, but I decided to focus on the space more generally. For those who want to read the Nature article, here it is: http://20

This was inspired by a Nature article, but I decided to focus on the space more generally. For those who want to read the Nature article, here it is: http://20bits.com/downloads/nature06830.pdf http://20bits.com/downloads/nature06830.pdf It's pretty thick, so let me know if you have any questions.