'Evolution of a Plague'- Last year, the worst Ebola outbreak in human history swept through West Africa, killing more than 10,000 in Liberia, Sierra Leone, and Guinea. The disease spread so quickly in part because the international community was slow to respond, and also because these countries lacked the infrastructure, funding, and street-level awareness to combat the virus. Danny Gold goes to West Africa to see how people there have stepped up to control the outbreak, and to learn whether the world is prepared for the next major epidemic. 'Campus Coverup'- Media reports of sexual assaults on U.S. campuses have risen dramatically over the last few years. More and more survivors and their allies are coming forward to denounce a pervasive culture of sexual violence they say is out of control.