Ken Grossman, co-founder and CEO of Sierra Nevada Brewing Co., discusses Sierra Nevada's DevESTATEtion beer, and how it was a product of changing climate.  "We had an off barley harvest last year, the rains came at the wrong time and we ended up losing -- actually, we ended up with barley but we didn’t think it was great barley, and so we chose to use it as organic animal feed rather than brew with it and we purchased some organic barley from some friends and ended up making what we call DevESTATEtion -- instead of Estate Ale it was DevESTATEtion Ale," said Grossman.