Mark Zuckerberg is, among many other things, the highest-profile taxpayer on the planet today.

After today's Facebook IPO, Zuckerberg will owe nearly $200 million in California state taxes alone. That's "among the largest tax liabilities that a single individual has ever paid at a given point in time," says Jason Sisney of the California State Budget Legislative Analyst's Office.

Zuckerberg's profits will be taxed at a 10% rate in California. That's a much higher rate than in many other states.

President Obama's performance in Tuesday's Arkansas primary won't be as embarrassing as what happened in West Virginia two weeks ago, when he gave up 41 percent of the vote to someone who happened to be sitting in a federal prison in Texas for embezzlement.

But it may well do more lasting damage to his party.

A unlikely coalition failed to derail the government's practice of holding terror suspects for indefinite periods of time.

Some Democrats and Tea Party Republicans put the issue to a vote through an amendment to the National Defense Authorization Act that would have ended the practice but it ultimately failed, today, in the GOP-controlled house by a vote of 238 to 182.

The AP reports:

Some of the world's fastest growing economies are in Africa. But hunger is still a widespread reality there, and will be a major topic at this weekend's G8 summit. Host Michel Martin discusses efforts to fight hunger on the continent with USAIDs Tjada McKenna and Mwiza Munthali of the advocacy group TransAfrica.

Transcript

MICHEL MARTIN, HOST:

I'm Michel Martin and this is TELL ME MORE from NPR News. Coming up, leaders of the G8 - that's the group of eight highly industrialized nations - are meeting at Camp David this weekend, but they're also joined by the leaders of some emerging African countries who will discuss the issue of food security on the continent. We'll talk more about that in a few minutes.

Mitt Romney releases his first general election campaign ad. Plus wealthy GOP investors say their super PAC won't run a smear campaign connecting controversial pastor Jeremiah Wright with President Obama. Host Michel Martin discusses the latest political developments with Lenny McAllister of Politic365.com and author Michael Fauntroy.

Rodrigo y Gabriela plays everything from heavy metal to jazz to acoustic folk. The duo started out in a thrash-metal band in Mexico City, but moved to Dublin in 1999. From Ireland, its inventive instrumental music spread to the U.K., then to Europe and the U.S. before finally finding its way back to Mexico. Rodrigo y Gabriela's big break came in 2006, when the pair's self-titled debut topped the Irish charts.

Journalists have spent many days and millions of words hashing over the news that banking giant JPMorgan Chase lost billions of dollars trading "synthetic" derivatives.

I am one of those journalists who, more or less, can understand what the bank says it was trying to do, i.e., hedge against loan losses. But here's what I have a hard time explaining:

What does this kind of complex trading have to do with the price of eggs?