Today is the day that the Supreme Court hears arguments about the "individual mandate."  Sara Rosenbaum, Harold and Jane Hirsh Professor of Health Policy at George Washington University, discusses what we learned yesterday and what's expected in today's hearings.

Adam Nossiter, West Africa bureau chief for the New York Times, and Ofeibea Quist-Arcton, NPR West Africa correspondent, discuss the coup in Mali and the peaceful election and transition of power in Senegal.

It's corporate shareholder meeting season, and many groups are calling for more transparency when it comes to corporate political donations.  Thomas DiNapoli, New York State Comptroller, joins us to discuss the issue. Are you a shareholder? What do you want to know about a company's political spending? Let us know!

Do you have an opinion on Tim Tebow coming to New York that's based on religion rather than football? Jets Fans: Phones are open. Call 212-433-9692 or post your comment here!

Alain de Botton, writer, philosopher and author of Religion for Atheists: A Non-believer's Guide to the Uses of Religion, looks at what religion offers, even to the agnostic and atheist.

Avik Roy, senior fellow at the Manhattan Institute, writes The Apothecary blog on healthcare policy for Forbes, and is live chatting at National Review Online on the Supreme Court healthcare case.  He brings us up to speed on today's arguments on the health insurance mandate being heard at the Supreme Court on the Affordable Healthcare Act case.

Jonah Lehrer, contributing editor at Wired, frequent contributor to The New Yorker and Radiolab, and author of the new book, Imagine: How Creativity Work recently visited the WNYC studios. He answered the question at the center of our series End of War: Is War Inevitable?