npr:

Lager Beer’s Mystery Yeast

“Lager may have its roots in Bavaria, but a key ingredient arrived from halfway around the world. Scientists have discovered that the yeast used to brew this light-colored beer may hail from Argentina. Apparently, yeast cells growing in Patagonian trees made their way to Europe and into the barrels of brewers.”

This is what I am talking about when I say “meaningful science”. 

(via ScienceNOW)

Seems like open source beer to me.