The US Supreme Court has begun hearings on the Affordable Care Act. We hear what it's like to go without health insurance, and arguments about the potential impact of what Republicans call "Obamacare." Also, nuclear terrorism and weapons proliferation.
Banner image: People who waited on line get a ticket to view oral arguments in the Patient Protection and Affordable Care Act outside the Supreme Court March 26, 2012 in Washington, DC. Photo by Chip Somodevilla/Getty Images