Libyan rebels have reached the important port city of Zawiyah, where they are engaged in fierce clashes with government forces. Zawiyah is the site of Libya's sole remaining refinery and it's on the road to Tunisia. If the rebels hold it, they will control the port, the refinery and one of Libya's main roads. Guest host John Ydstie gets the latest on the fighting from NPR's Lourdes Garcia-Navarro in Libya.

The Mars rover Spirit conked out in May, but its twin, the rover Opportunity, is still functioning and has just arrived at a spot NASA's dubbed Spirit Point. Guest host John Ydstie speaks with geologist John Grant about his decades working on the Mars Rover project.

On Monday, President Obama flies to Minnesota to begin a bus tour devoted to job creation, confidence restoration and to reviving his own image as a leader. Guest host John Ydstie talks to NPR White House Correspondent Ari Shapiro about the president's itinerary and the motives behind the trip.

South America has produced more than its share of soccer superstars. The soccer giant Real Madrid is banking on Leonel Angel Coira of Argentina to become one of them. Last week the club signed the soccer prodigy to a one-year contract. When the contract expires, young Leonel will be all of 8 years old.

"Well everyone's looking for the next big thing," Tim Stannard, who writes for the soccer publication FourFourTwo, tells Weekend Edition guest host John Ydstie.

Maria Bruno knew something was really wrong when she put her newborn son, Nicolas, down for a nap and then was too afraid to pick him up.

"I was experiencing anger and rage, and I had suicidal thoughts," she says.

In her desperation, she called her midwife and said, "'I don't know what's wrong, but I can't take care of the baby, and I'm miserable all of the time.'"

Her midwife asked what was wrong. Did she have thoughts of hurting herself? "I just laughed," Bruno says. "I said, 'All the time.'"

In the 1890s, Russian Jews fleeing anti-Semitic violence and discrimination arrived by the thousands to a remote corner of the Argentine Pampas. They founded hamlets similar to the shtetls they left behind. They spoke Yiddish, built synagogues and traditional Jewish schools — and became farmers and gauchos, the mythical Argentine cowboys.

President Barack Obama's Midwestern bus tour will focus on job creation and restoring confidence, but the Federal Reserve doesn't seem very confident about the future.

Last week, the Fed committed to near-zero interest rates until 2013, indicating that the Fed board isn't anticipating much growth in the job market. That's a troubling prospect for Americans, and it leaves a big challenge looming over Washington about whether the government can push growth above the painfully low bar set by the Fed.

How can you feed starving people without feeding an insurgency as well? That is one of the challenges the Obama administration faces in providing aid to Somalia.

As the U.S. and other donors scramble to help Somalis survive a famine, some experts see an opportunity of sorts. The drought, they say, seems to be starving the Islamist militia group al-Shabaab of resources, limiting its ability to wreak havoc in Somalia.