Sandra Fluke, the Georgetown University law student who has become a "poster child" for Democrats since Republicans wouldn't let her testify at a House hearing about President Obama's policy on contraception, said today she was stunned and outraged Wednesday when conservative radio broadcaster Rush Limbaugh called her a "slut" and "prostitute" on his nationally syndicated show.

If Rick Santorum has a lead on Mitt Romney in Ohio, it looks like it's not much of one. A new Quinnipiac University poll shows Santorum leading Romney by four percentage points, 35 percent to 31 percent.

With the margin of error at +/-4.3 points, the two top rivals for the Republican presidential nomination are essentially tied just days before Super Tuesday when voters in Ohio and nine other states take part in the presidential primary process.

Children are diagnosed with lead exposure only when their health is already endangered. Wouldn't it be better to prevent that danger instead? That's the goal of a project in the city of St. Louis that tests the homes of pregnant women and removes dangerous lead before babies were born.

That SWAT-team approach can reduce children's exposure to toxic lead, according to a new study.

Yelp surprised analysts today during its first hours of trading as a public company.

As the Seattle PI puts it, the user-review company's shares soared by as much as 60 percent in early trading. The stock opened at $22.01 a share and has hit a high of $25.10.

People in countries like Kenya, Rwanda and Tanzania rely on crucial undersea cables to keep them connected to the internet. A ship's anchor recently sliced one of those cables, so now web traffic is being re-routed to the company Seacom. Host Michel Martin talks with Seacom founder Brian Herlihy.

The Barbershop guys preview Super Tuesday and weigh in on Judge Richard Cebull's email that included a joke about President Obama's heritage. Host Michel Martin checks in with freelance journalist Jimi Izrael, columnists Ruben Navarrette and Mario Loyola, and Colorlines.com Editorial Director Kai Wright. Advisory: This segment may not be comfortable for some listeners.

The National Review's Kevin Williamson caused an uproar last week when making comments about Rihanna and Chris Brown. Host Michel Martin and editor Ammad Omar comb through the angry listener feedback and check back with Williamson, who states his case.

Omarosa Manigault made feisty appearances on The Apprentice and The Celebrity Apprentice, but now she is serving as a Baptist reverend. She talks about her career change with host Michel Martin.

South Sudan gained independence in 2011, but it has been locked in a bitter conflict with its northern neighbor. Rep. Frank Wolf (R.-Va.) just returned from the area. He talks with host Michel Martin about what some observers are calling a humanitarian crisis, and what the U.S. can do to help.