Earlier this month, tenor Juan Diego Florez made headlines when he sang the aria "Una furtiva lagrima" in the Donizetti opera L'elisir D'Amore at the Metropolitan Opera — not once, but twice.

The audience responded so enthusiastically that after well over a minute of applause and shouts of "Encore!" he sang the whole thing again — all five minutes of it.

U.S. beach volleyball star Kerri Walsh is honing her game for the 2012 Summer Olympics in London, where she and her playing partner, Misty May-Treanor, hope to continue a streak of dominance that goes back to the 2004 games in Athens and Beijing in 2008.

Speaking with Morning Edition co-host Renee Montagne, Walsh says the duo's effort to represent the United States this summer is going well.

Three people were killed in last week's shootings in Tulsa, Okla.: Dannaer Fields, 49; William Allen, 31; and Bobby Clark, 54. Two others were wounded in the shootings. All of them were shot — apparently at random — in the predominantly black neighborhood of Northgate in northern Tulsa.

It was Bobby Clark's brother, Donny, who first found him after the fatal shooting.

"I came through there and I realized it was my brother laying in the street," Clark says. "They shot him under the armpit, and I think it hit his heart."

Despite falling short in the quest for the Republican presidential nomination, former Pennsylvania Sen. Rick Santorum has established himself as one of the dominant conservative voices in America, particularly when it comes to social issues such as abortion and birth control.

Santorum announced Tuesday that he is suspending his quest for the presidency.

Santorum ultimately chose to suspend his campaign ahead of the April 24 primary in Pennsylvania. A loss on his political home turf would have done serious damage to his future electoral prospects.