NPR News

Now we know the Final Four teams in the 2012 NCAA Division I men's basketball championship:

-- Kansas.

-- Kentucky.

-- Louisville.

-- Ohio State.

So it's time to ask:

The women's Division I tournament, by the way, is down to its Elite Eight.

Good morning.

Our early headlines:

-- Tens Of Thousands Expected Today At Florida Rally For Trayvon Martin .

-- The Arguments Begin: Supreme Court Takes Up Health Care Starting Today.

A rally in Sanford, Fla., today "to demand justice in the Trayvon Martin shooting death," is expected to draw "tens of thousands of people," Orlando's WFTV says.

The rally — one month after the black teen's death — is due to begin at 4 p.m. ET and end with those thousands gathered outside the city's civic center as the Sanford City Commission meets to hear from the 17-year-old Martin's parents.

NPR's Ken Rudin is a fan of using history as a guide to what might happen next when it comes to politics, and this morning he focuses on the 2012 race for the Republican presidential nomination and what lessons we might learn from an earlier battle between GOP contenders.

"A house fire believed to be the worst in Charleston's history claimed its ninth victim Sunday," West Virginia's Sunday Gazette-Mail reports.

According to the newspaper, 7-year-old Bryan Timothy Camp was taken off life support Sunday morning. The fire at the home he lived in with his mother, her boyfriend, an aunt and six other children began around 3:25 a.m. ET on Saturday. Only the aunt survived. The Gazette-Mail says the rental home had no working smoke detectors.