If you think your job is stressful, consider the duties of Ben Bernanke. As Chairman of the Federal Reserve, Bernanke has tremendous influence over America's economy - and that economy has been troubled lately. The recession may have ended, but unemployment remains high and the recovery has been slow. While at Ohio State University, Bernanke talked with Scott Pelley of "60 Minutes" about the challenges still ahead. Here are excerpts from that interview.