Renewable fuels developer Joule Unlimited Inc. said John Podesta, a veteran of two White House administrations, has joined its board of directors. Podesta was previously White House chief of staff under President Clinton, and more recently served as co-chair of President Obama’s transition. He is currently president and CEO of the Center for American Progress, a think tank he founded in 2003. “I have seen and heard many proposals by renewable energy companies, and can unequivocally say that Joule has a technology and a system unlike any other, with industrial viability and a clear path to market within the next...