In Short Supply – Hospitals have been facing daily drug shortages across the country for over a decade. The lack of essential drugs is not a matter of supply and demand, a 60 MINUTES investigation found, but pharmaceutical companies have been halting production of life-saving generic drugs because they aren't profitable. Bill Whitaker finds a broken system, as doctors express serious concerns and the government stands on the sidelines. Hope Chicago – 60 MINUTES' Scott Pelley visits Johnson College Prep on Chicago's South Side, where many students have no permanent home and face violence on their way to school, as they experience a miracle. Pelley sits down with the principal and the students whose lives will be changed forever by Hope Chicago, which funds blanket scholarships for students to attend in-state colleges for free. Jonas Kaufmann – 60 MINUTES profiles opera singer Jonas Kaufmann. Critics applaud the German tenor's singing and range, while others point to his history of high-profile performance cancellations. After following Kaufmann for years, traveling to his childhood home in Munich, Norah O'Donnell sits down with the opera star and learns about his rise to the top and his quest to protect his voice.