Alibaba filed its IPO yesterday. But it hasn’t chosen an exchange yet, and the competition between the hot favorites, NYSE and the NASDAQ, will likely be intense.We report on how much money an exchange makes from a big listing like Alibaba. Plus, Stanford University is the first major university to divest itself of carbon-producing fossil-fuel investments – but only coal. Can coal producers be isolated when coal still generates nearly 40 percent of U.S. electricity and is integral to many other industries? Then, Coca-Cola has quickly abandoned an ad campaign whose tagline was “You’re on Diet Coke,” after people on social media took some shots at it.