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STEVE INSKEEP, HOST:

Authorities in Los Angeles are celebrating the arrest of a suspect in dozens of fires. L.A. County Supervisor Zev Yaroslavsky told reporters that residents can finally get some rest.

ZEV YAROSLAVSKY: Our long, four-day nightmare is over. This has been, literally, a nightmare. I haven't had a good night's sleep since last week, and I'm looking forward to one tonight.

Steve Inskeep and Linda Wertheimer have business news.

Steve Inskeep has the Last Word in business.

The voting in the Iowa GOP caucuses begins Tuesday night. On the last day before the caucuses, Republican presidential candidates campaigned across the state Monday. Their goal was the same — motivating supporters to leave their homes on a cold evening, go to their precinct meeting places and vote.

One year ago, protesters across the Arab World began to rise up against autocratic rulers, forcing several from power. These revolutions have led to the region's biggest upheaval in decades. It's still not clear how these seismic changes will play out, and so far, the results have been mixed. In a six-part series, NPR is taking a look at where the region stands today. In the second installment, NPR's Lourdes Garcia-Navarro reports on how Islamists in Libya, long suppressed during Moammar Gadhafi's 42-year rule, are now able to operate freely.

One of the more controversial episodes of the Iraq war will be revisited in a military courtroom in California this week.

In November of 2005, a Marine squad killed 24 Iraqis, some of them women and children in the village of Haditha. Staff Sgt. Frank Wuterich led the squad of Marines, and on Wednesday he'll face voluntary manslaughter charges at Camp Pendleton.

For some of America's lowest-paid workers, the new year means a pay raise. Some states set their own minimum wages, above the federal rate of $7.25 an hour, and that rekindles an old debate over whether minimum wages make sense — especially at a time of high unemployment.

Like several other states, Washington state's minimum wage is indexed to the cost of living. This year, the formula has raised the statewide minimum from $8.67 to $9.04 an hour, making it the nation's highest statewide rate.

Saudi Arabia said Monday that it will enforce a law that allows only females to work in women's lingerie and apparel stores, despite disapproval from the country's top cleric.

The 2006 law banning men from working in female apparel and cosmetic stores has never been put into effect, partly because of the views of hard-liners in the religious establishment, who oppose the whole idea of women working in places where men and women congregate, such as malls.