Science of Beer: Tapping the Power of Brewer's Yeast

Whether it's a lager or ale, sour or bitter, dark or light, most beer has one thing in common: yeast. KQED Science visits a commercial yeast laboratory and a Bay Area brewery to reveal how this key ingredient is a major player in both science history and beer production.

Learn more about the science of beer at KQED Science: http://goo.gl/X1yX9i