date:Apr 11, 2014
Indian Mound Park, near Sheboygan, Wis. It is the first time the microbe has been found in nature in North America, or indeed outside of Patagonia. Found by UW-Madison undergraduate student Kayla Sylvester, a member of Hittinger's group, the yeast occurs only at a very low frequency and was likely accidentally introduced, just as an ancestor found its way to Europe and kick-started the production of cold-brewed lager beer hundreds of years ago.
If I had to bet, I'd lay money on ski bums or mig