Mexico has long been a major exporter of oil, but now their main supply is running dry. So they are drilling deeper and deeper in the Gulf of Mexico, and some worry that a catastrophic oil spill could occur, even worse than the BP spill last year. Correspondent Greg Dobbs is in Mexico to investigate. Then, correspondent Maura Axelrod introduces us to a unique hospital in Afghanistan, where American doctors and nurses are trying to bring modern medicine to a place that badly needs it.