New York bureau chief Heidi Moore discusses JPMorgan CEO Jamie Dimon's testimony in front of the Senate Banking Committee today. In the latest installment of Freakonomics, Stephen Dubner talks about how despite convential wisdom, investing in labor can help a company's bottom line. Colleges are admitting more students from their waitlists -- but is that a good thing? Berkshire Hathaway makes what seems like a counter-intuitive move: investing in the private jet business. And Stephen Beard continues his A Man Walks Into a Bar series in Madrid, Spain.