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All throughout the school's 110-year history, the Manassas High School football team in Memphis, Tenn., was known as a losing team. In 2009, volunteer coach Bill Courtney led the struggling Manassas Tigers to the playoffs.

Filmmakers Dan Lindsay and T.J. Martin chronicle the challenges of the team — on and off the field — in the documentary Undefeated.

Lindsay and Martin talk with NPR's Neal Conan about the film, nominated for an Academy Award in the documentary feature category.

Journalist Marie Colvin, of Britain's Sunday Times, was killed in Syria Wednesday — along with French photographer Remi Ochlik. NPR's Neal Conan remembers the foreign journalist who joined Talk of the Nation several times, reporting from Gaza and Libya.

Wikipedia is the go-to source for succinct information on almost every topic imaginable. It strives to reflect neutral truths that can be verified by reliable sources. The site, known as "The Free Encyclopedia" is written and edited by volunteers.

Traffic cameras that snap pictures of cars running red lights or speeding are used in 661 cities around the U.S. NPR's Corey Dade explains that while local governments argue they make driving safer, some motorists believe the cameras are nothing more than revenue generators.

Some analysts are calling the GOP primary in Michigan a do-or-die state for Mitt Romney, who grew up in the suburbs of Detroit and whose father was a popular governor in the state. NPR's Ken Rudin and NPR's Don Gonyea discuss the Michigan primary.

In the documentary If A Tree Falls, director Marshall Curry tells the story of the rise and fall of the Earth Liberation Front, a group that the FBI once described as America's number one domestic terrorism threat. The film has been nominated for an Academy Award.

NPR's Neal Conan reads from listener comments on previous show topics including the concept of "black cool," Jeremy Lin and "Linsanity," and which country's constitution Egypt should use as an example.

The visit of Chinese Vice President and heir apparent Xi Jingping to the United States, raised questions about internal Chinese politics — from human rights to technological development — and how the country will be governed in the future.

Americans have tended to save more and spend less in the years since the economic downturn in 2008. But according to a survey from BankRate.com, only 54 percent of Americans have more emergency savings than credit card debt.

Virginia state legislators passed a bill requiring women to receive an ultrasound — which is conducted via transvaginal probe in the first 12 weeks of pregnancy — before having an abortion. Dahlia Lithwick, senior editor for Slate magazine, calls the proposed law "an abomination."

Photojournalist Danfung Dennis has captured the brutalities of the wars in Iraq and Afghanistan for major publications, including The New York Times, Time magazine, The Guardian and The Washington Post.

Inspired by these experiences, Dennis embedded with the U.S. Marines Echo Company in Afghanistan and created the documentary Hell And Back Again.

The documentary focuses on the story of U.S. Marine Sgt. Nathan Harris. Harris' hip was injured by fire from a Taliban machine gun. The film follows his transition back to life in North Carolina.

Dennis talks with NPR's Neal Conan about the process of directing the film, now nominated for an Oscar for Best Documentary Feature.

Stories about life on Native American reservations often focus on the hardships — alcoholism, drugs, violence and poverty. In Rez Life: An Indian's Journey Through Reservation Life, Ojibwe writer David Treuer strives to capture stories about the beauty of life on Indian reservations.

The son of an Ojibwe mother and an Austrian holocaust survivor, Treuer grew up on the Leech Lake Reservation in Minnesota. Though he acknowledges that reservation life comes with a range of challenges, he says most treatments of Native American history leave out the good parts of the experience.

Treuer, who typically writes novels about Native American life, talks with NPR's Neal Conan about his first work of non-fiction.

While Western officials believe Iran is seeking to enrich uranium for a nuclear weapon, Iran's leaders contend it is for peaceful purposes only. NPR's Mike Shuster discusses Iran's regional, diplomatic and nuclear goals.

The U.S. Supreme Court on Wednesday will review the case of Xavier Alvarez — one of the first people to be convicted under the Stolen Valor Act. In a The Washington Post op-ed, George Washington University law professor Jonathan Turley, argues that stolen valor should not be criminalized.

Writing in the journal Nature, UCSF pediatrician Robert Lustig and colleagues suggest regulating sugar just like alcohol and tobacco--with taxes and age limits, for example--due to what they call the "toxic" effects of too much sweet stuff. Education, they say, is not enough.

Linguist David Harrison has travelled to remote corners of the world seeking the last speakers of endangered languages. Now, he's using digital tools to to record and revitalize these dying languages. At the AAAS meeting this week, Harrison unveiled 'talking dictionaries' for eight languages.

Duke biologist Sarah Zylinski wants to better understand how cuttlefish see the world. Like their relatives octopus and squid, cuttlefish are master camouflagers--and Zylinski says you can learn something about how they process visual information by testing how they change their skin patterns in relation to different backgrounds.

Two studies in the Archives of Internal Medicine suggest short and long-term exposure to air pollution can increase the risk of stroke and cognitive declines. Study author Jennifer Weuve discusses the results, and why particulate matter and gases like ozone may harm the body.

Military bases in the California desert could host seven gigawatts of solar power installations--roughly equivalent to the output of seven nuclear plants--according to a study commissioned by the Department of Defense. Study director Robert Kwartin discusses the report.

Federal regulators signed off on the construction and operation of two nuclear reactors at a Georgia plant. It's the first license to be granted for a new reactor in the U.S. since 1978. Nuclear expert Per Peterson discusses the reactors' design, safety features and what this means for the future of nuclear power.

In his book Concrete Planet, author Robert Courland discusses why the concrete first used by the Romans is more durable than the concrete used in most present day buildings. Plus, mineralogist Peter Stemmerman tells us about his invention, Celitement and why it is greener than Portland cement.

New York Knicks point guard Jeremy Lin sprang into the spotlight after he scored 27 points in a game against the Toronto Raptors. Lin, who previous mostly rode the bench, has become a sensation in the U.S., particularly among many Asian Americans. Journalist Chuck Leung feels a bit conflicted about celebrating Lin's success.

The number of jobless claims for January 2012 was at the lowest point since March 2008. Businesses are reporting profits, buyers are reporting confidence. Diane Swonk, chief economist for Mesirow Financial, discusses whether it's safe to say an economic recovery has begun.

The Academy of Motion Picture Arts and Sciences has changed the way they nominate documentaries for the Oscars. One of the most controversial changes — proposed by filmmaker Michael Moore — is that films must be reviewed by The New York Times or the Los Angeles Times.

Since the uprising against President Bashar Assad began in March 2011, international attention has been focused on the marches and demonstrations led by the Syrian opposition. Though it is often cast as a monolith, the Syrian opposition is made up of many subgroups with varied interests.

Chinese Vice President Xi Jinping, the heir apparent to the presidency, visited Muscatine, Iowa Wednesday. He spent a week with a family there in 1979 to learn about American agriculture. Des Moines Register reporter Kyle Munson discusses the relationships foreign leaders form with U.S. towns.

Israel blames Iran for attacks in the capital cities of India, Georgia and Thailand, further escalating Israeli-Iranian tensions. Washington Post columnist Jackson Diehl believes that Iranian leaders are exhibiting signs of desperation.

GOP presidential candidate Rick Santorum swept caucuses in Minnesota and Colorado and the Missouri primary, gaining considerable ground on Mitt Romney's primary lead. NPR's Ken Rudin and Dan Balz, of the Washington Post, recap the week in politics.

When immigrants face depression, therapy may not be the first option they explore for relief. When they do seek counseling, they often encounter a cross-cultural struggle to understand and be understood by American practitioners.

In January, a group of residents in Duluth, Minn., launched an anti-racism effort called the Un-Fair Campaign. They created ads, posters and billboards aimed to raise awareness about racial injustice and asking white people to recognize institutional racism.

The posters have prompted thoughtful discussion in some circles and backlash in others.

The organizers are also planning other events — a series of discussion, speeches and films, around the city.

Duluth mayor Don Ness, who endorsed the campaign, talks with NPR's Neal Conan about the mixed reactions.