For nearly a year, Pershing Square Capital hedge fund CEO Bill Ackman has been calling Herbalife a Ponzi scheme, now he's calling the company's time of death. In a speech given for MBA student at Oxford, Ackman said that Herbalife will be shut down, and that his efforts, “will have made progress in that direction within twelve months,” reports Business Insider, citing video of Ackman's speech. In late 2012 Ackman announced a massive short position in Herbalife, declar...