The writeup seems a bit goofy and I can't find the paper with the doi. Anyone else having any luck finding the actual paper?
The article from the current issue that best matches the discussion in the ARS article is here: http://www.pnas.org/content/107/9/4051.abstract?sid=dfaf11ad...
Can't find the article cited at the DOI link is broken.
10.1073/pnas.0910200107
but I'm not completely sure.