What does it mean for large companies to be classified as “100 percent renewable?" What kinds of challenges does industry faces when it comes to going green? As we look down the road at our nation’s changing energy scenarios, complete with new sources of natural gas and increasing demand for renewables, a number of companies are making the kinds of energy consuming shifts that will address both economic and climate dilemmas. Drawing on her leadership experience as the former head of the EPA, Apple Vice President Lisa Jackson is driving the company’s effort to establish itself as an industry leader in clean energy, helping navigate its drive to being 100 percent renewable. Is Apple attempting to create the industry standard? What do the critics say? What challenges does Apple — and other firms with similar ambitions — face with goals to create all products using recycled or renewable materials?