Jason Hartke Vice President, National Policy U.S. Green Building Council Add six companies…five million square feet of collective real estate…and one challenge. Stir. What do you get? A recipe for something remarkable – not just better buildings, but best buildings. In other words, California’s Best Buildings Challenge. Yesterday, six major leading companies – Adobe, Genentech, Google, Prudential Real Estate Investors, SAP and Zynga – stepped up to the Challenge, a commitment to achieve not just a 20 percent reduction in energy but also in water and waste. The kicker? They’re doing i...