Watch 60 Minutes Season 42 Episode 15 Online

WATCHING THE BORDER - Steve Kroft reports on the status of the multi-billion-dollar "virtual fence" being built at the U.S.-Mexican border, which is years behind schedule and so far covers only about one percent of the border. Keith Sharman is the producer. REVELATIONS FROM THE CAMPAIGN - Authors of a new book, "Game Change," and John McCain's former top campaign strategist reveal behind-the-scenes issues from the Republican and Democratic camps during the presidential campaign. CNN's Anderson Cooper reports. Robert Anderson is the producer. RESURRECTING THE EXTINCT - Scientists believe they can sustain endangered species - maybe even one day resurrect some that have died out - using DNA technology. Lesley Stahl reports. Shari Finkelstein and Meghan Frank are the producers.