With Greece entering its fifth year of recession and dealing with harsh austerity measures imposed as part of a eurozone bailout deal to save it from default, its society is in upheaval. Opinion polls suggest the old political system is collapsing, and extremist parties are gaining popularity ahead of spring elections.

At a recent protest in Athens, a large bronze bell tolled as thousands of policemen in full uniform marched solemnly through the streets. They ominously waved their handcuffs at Parliament, shouting, "Take your bailout plan and get out of here."

When Susy Mansfield needed a hip replacement in 2009, her orthopedic surgeon chose a relatively new and untested kind of artificial hip made entirely of metal.

"He said, 'You're young. Metal is good for younger people. It's going to last a lot longer,' " says Mansfield, who was 57 at the time.

Two eras clash on Monday at the U.S. Supreme Court, when a law written in 1939 is applied to in vitro fertilization. At issue is whether children conceived through in vitro fertilization after the death of a parent are eligible for Social Security survivors benefits.

At least 100 such cases are pending before the Social Security Administration.

Transcript

STEVE INSKEEP, HOST:

It's MORNING EDITION from NPR News. I'm Steve Inskeep.

DAVID GREENE, HOST:

And I'm David Greene.

Transcript

STEVE INSKEEP, HOST:

U.S. officials think that this may finally be the time that economic sanctions against Iran will start to have a major effect. The U.S. and its European allies have been hoping that tighter and tighter sanctions will push Iran to negotiate an agreement over the future of its nuclear program. Israel has said it can't wait forever before ordering a military strike, but U.S. officials believe that the sanctions can produce results. Here's NPR's Tom Gjelten.

Transcript

STEVE INSKEEP, HOST:

We are sorry to report that Lehigh is out of the NCAA tournament. They lost in the second round after a huge upset of Duke in the first. Murray State is gone, too.

But as the tournament gets down to 16 teams, one of those teams is Ohio University. Traditionally not one of the powerhouse teams we talk about year in, year out. In fact, it's been more than four decades - 48 years to be precise - since the school has made it this far in the tournament.

NPR's Mike Pesca reports on the team's quest.

Transcript

STEVE INSKEEP, HOST:

We've spent much of the weekend trying to understand a nightmare moment of the U.S. presence in Afghanistan. An American soldier apparently walked off his post and killed 16 Afghan men, women and children. Staff Sergeant Robert Bales - we know his name now - is being held in solitary confinement in Fort Leavenworth, Kansas. NPR Pentagon correspondent Tom Bowman has been gathering details of the shooter's life, and he's on the line now. And, Tom, what have you learned?

Transcript

DAVID GREENE, HOST:

It's MORNING EDITION, from NPR News. Good morning. I'm David Greene.

STEVE INSKEEP, HOST:

And I'm Steve Inskeep. Welcome, David.

There's a protest planned for this morning outside the courthouse in Sanford, Florida. People say they want justice for the family of Treyvon Martin. Last month, that black teenager was shot by a white neighborhood watch volunteer. The shooter says he acted in self-defense, although the teen he shot was unarmed. And newly released recordings of 911 calls offer painful details of the killing.

Former House Speaker and presidential candidate Newt Gingrich has been calling his opponent Mitt Romney the weakest front-runner in modern times.

On CNN, he clarified it when he said the former Massachusetts governor is probably the "weakest front-runner since Leonard Wood in 1920."

So, who was Leonard Wood?