Questioning of Supreme Court nominee Sonia Sotomayor begins today. We speak with Kristina Moore, who is blogging from the Senate Judiciary Committee hearing room for Scotusblog.com.

Harvard Business School professor Michael Porter's "Five Forces Analysis" is required reading in the business world. It helps strategists decide which industries are ripe for investment. Now Porter is turning his attention to reforming healthcare. His cure for includes: universal healthcare; requiring insurers to reveal how healthy their subscribers are; paying doctors based on the overall health of a patient instead of for each procedure; and getting several doctors - from primary care to specialists - to work together in an integrated practice, turning a patient's care into a team approach.

Facebook hopes to take on Google to become the next king of the internet mountain. While Google now dwarves Facebook in revenue and traffic, Facebook has something Google doesn't: information on its 200 million Facebook users. The social networking company is hoping to use that information to create a web 2.0 search engine that will rival Google. Fred Vogelstein of Wired Magazine is our guest.

Former Liberian President Charles Taylor took the stand in his own defense at his war crimes trial at The Hague today, telling judges the case against him was built on lies and misinformation. He is charged with murder, torture, rape, sexual slavery, using child soldiers and spreading terror during Sierra Leone's 1991-2002 civil war. Taylor, who was educated in the Boston area and once escaped from a Massachusetts jail, is the first African leader to stand trial for war crimes. We speak to the BBC's World Affairs Correspondent Adam Mynott, who is covering the trial. Boston Globe reporter Bryan Bender also joins us to talk about Taylor's escape from jail.

Though saxophone phenom Grace Kelly is only 17, she's already released 5 albums. She plays alto, tenor and soprano saxophone, writes and arranges music, and sings. We reprise a conversation we had with the multi-talented Grace Kelly last year.