Ray Suarez continues his series from Havana with a report on the Cuban health care system's emphasis on preventive medicine.

Ray Suarez gives a preview of his series of Global Health Unit reports from one of the poorest countries in the world, Mozambique, where the number of cases of HIV and AIDS has strained medical and financial resources.

Robert Frank: Here’s another product-design question, this one posed by my former student Brendan Quigley. “Why,” he asked, “are newspapers, but not soft drinks, sold in vending machines that allow customers to take more units than they paid for?”…