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Arizona Rep. Gabrielle Giffords is stepping down from her seat. She made the announcement Sunday, and Monday she spent time with the people who were with her last January when she was shot through the head at a community event in her home district.

The Supreme Court rules that police can't put a GPS tracking device on a vehicle without a warrant.

A plea deal has been reached in the court martial case of Marine Staff Sgt. Frank Wuterich. He was the last person facing charges in the killings of 24 Iraqis at the village of Haditha in 2005. Monday, he admitted to one charge of dereliction of duty. The case became a touchstone for criticism of the Iraq war. Originally, several Marines were charged with murder in the case. But the Marines who killed the Iraqi civilians that day claimed that their actions were tragic — but legal under the official rules of engagement in a complex war fought in and among the people.

Robert Siegel talks with this year's Randolph Caldecott Medal winner Chris Raschka, who won for A Ball for Daisy. The Caldecott award is one of the most distinguished prizes in children's literature.

When the Taliban controlled Afghanistan from 1996 to 2001, their hard-line policies included a ban on music tapes and videos.

Yet now, the Taliban are producing their own CDs in an attempt to win the hearts and minds of Afghans.

In bustling downtown Kabul, Mustafa, 22, works in an electronics store selling music CDs to 20-something customers.

The issue of immigration reform, which simmered mildly during the first three Republican presidential contests, appears ready to boil over now that the candidates have reached Florida for the state's Jan. 31 primary.

Florida, with its large and influential Latino population, provides the earliest gauge of the difficulty facing any eventual GOP nominee in courting Hispanic voters, who increasingly view Republicans' rhetoric about immigration as anti-Hispanic.

Life came full circle for Rep. Gabrielle Giffords today. A little more than a year after she was shot in the head at a community meet-and-greet she organized, she met with others who survived the rampage.

At her office in Tucson, the Arizona congresswoman met with Daniel Hernandez, her former intern who is credited with helping to save her life by containing her bleeding.

American commanders in Afghanistan are preparing for a major shift in their mission this year.

U.S. troops are expected to move away from their lead role in combat operations in most areas. Instead, they'll advise Afghan forces to take the lead in both operations and security duties throughout much of Afghanistan.

When the genre-defying Melissa McClelland married Juno nominee Luke Doucet, it seemed inevitable that the Canadian power couple would collaborate soon. After all, they'd had overlapping but stylistically diverse careers. McClelland was featured in Degrassi and won Best Americana Song at the 6th Annual Independent Music Awards, and her collaboration with Jesse Cook for his track "It Ain't Me Babe" spent three weeks at No. 1 on Billboard's world-music charts.

Two women losing their sight to progressive forms of blindness may have regained some vision while participating in an experiment testing a treatment made from human embryonic stem cells, researchers reported today.

The report marks the first time that scientists have produced direct evidence that human embryonic stem cells may have helped a patient. The cells had only previously been tested in the laboratory or in animals.

The Supreme Court has just ruled that police need a warrant if they want to place a tracking device on a suspect's vehicle. The court's decision was unanimous.

NPR's Nina Totenberg says that this debate has been a contentious issue in the digital age. Here's how she explained it to newscaster Paul Brown:

At issue here is the case of Antoine Jones, a Washington, D.C. night club owner. Police put a GPS tracking device on his car for 30 days. That helped authorities find a stash of money and drugs.

For a few years now, a handful of scientists have been proposing grandiose technological fixes for the world's climate to combat the effects of global warming — schemes called geoengineering.

Most housing set up to help the homeless comes with a strict no-booze policy.

But a study on a controversial complex in Seattle that allows chronic alcoholics to keep drinking suggests the lenient approach can work too.

Homeless people with alcohol problems decreased their consumption over two years at the facility, called 1811 Eastlake. The average amount of alcohol consumed on a typical drinking day by the 95 study participants had decreased by about 25 percent at the end of the two-year study.

Saying it was a "blatant interference in its internal affairs," Syria rejected an Arab League plan that the organization hoped would bring an end to the violence.

According to the Syrian Arab News Agency (SANA), the official state news agency, the government condemed the plan and accused the Arab League of arming terrorist groups, which they say are responsible for killing civilians and attacking state facilities.

Mitt Romney is reeling. Newt Gingrich is surging. Rick Santorum is hanging on. And Ron Paul continues to zig while others zag.

So goes the rollicking but inconclusive – so far – Republican presidential contest, as it moves from small-ball to big time in Florida for a Jan. 31 primary in which some 4 million state Republicans are eligible to vote.

Perspective? More Florida Republicans have already cast early ballots than all New Hampshire votes tallied for the top three finishers in that state's Jan. 10 GOP primary, about 197,000.

Using strong words, Pakistan's military officially rejected a U.S. report, which concluded a NATO strike that killed 24 Pakistani troops was undertaken in self defense. Pakistan's military said parts of the report were "factually not correct."

Throughout the month of October, we celebrated the 20th anniversary of World Cafe by revisiting some of the best and most memorable interviews of the past 20 years.

On today's jam-packed session, host David Dye takes us on a journey through the singer-songwriter movement of the 1990s, with artists who were at the forefront of the World Cafe program in its infancy.

Two people were killed in the Birmingham, Ala. area after severe storms rolled through the South and Midwest. The storms, reports the AP, triggered tornado warnings in five states.

Currently, the National Weather Service said it expects tornadoes, hail, thunderstorms and winds up to 75 mph to move through Alabama, Georgia and Mississippi. These kinds of storms, reports the NWS, are uncommon in the middle winter.