Walmart, Yahoo, Google Leading Charge on Going Green

CEO of Christensen Global Strategies Aimee Christensen is bullish on clean energy and says she thinks more of the world's biggest companies should be too. 'Energy efficiency is good for companies' bottom line,' explains Christensen, and increasingly business leaders agree with her. Leading the charge for sustainable growth are powerful names like Walmart (WMT), Yahoo (YHOO), Google (GOOG) and Microsoft (MSFT). The returns on renewable investment speak for themselves says Christensen, especially in the solar sector: 'It's a very strong investment, very low risk, very predictable returns.' TheStreet’s Rhonda Schaffler has the details from the Milken Global Conference in Los Angeles.