The link that Amos posted gives much better detail than the one I was working on when he beat me back. Quite obviously, someone at the source (Brown Univ) knows a lot more about what was done than the "average science reporter" at the other news bits. ...

And agreed - it's an impressive bit of work, especially if one believes the "author comment" that it was a holy sh#t! discovery that wasn't really being looked for on purpose.

John