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Cyclist Floyd Landis has lost his doping case and with it his claim to the 2006 Tour de France title. An arbitration panel upheld the results of a test that showed Landis used synthetic testosterone to fuel his victory. Landis has the right to appeal.

Charles Ferguson made his fortune as a software developer, then made an unlikely move to filmmaking. His documentary on the Iraq war, No End in Sight, breaks some new ground: Key decision-makers talk for the first time about the war and its aftermath.

All eight major Democratic presidential candidates sparred in Des Moines in a televised debate. The two biggest questions in the debate had to with too much and too little: Does frontrunner Hillary Clinton of New York have too much baggage to win the general election? And does Barack Obama have too little experience to do the job of president of the United States?

Jennifer Duffy, senior editor and political analyst for The Cook Political Report, offers analysis about the most recent democratic presidential debate and controversy surrounding John McCain's alleged ties to a Washington lobbyist.

"We won't heal until we make sense of the crack epidemic," Donovan X. Ramsey says. His book, When Crack Was King, examines the drug's destructive path through the Black community.

The investigation into the Atlanta-based jail comes almost a year after the death of Lashawn Thompson who died in a bedbug-infested cell in Fulton County Jail's psychiatric wing.

Kenya's President Mwai Kibaki and opposition leader Raila Odinga have reached an agreement on a coalition government in hopes of ending violence triggered by post-election fallout. Emira Woods, of the Institute for Policy Studies, and Jeffrey Gettleman, of the New York Times, offer details.

Henry Kissinger, George Schultz, Sam Nunn and William Perry argue the only way to stop nuclear weapons from falling into terrorist hands is to get rid of all of them. This week the former statesmen and their supporters convened in Oslo, Norway, for a conference.

25 years ago, a neuroscientist and a philosopher made a bet that by now, science and philosophy would understand what makes and defines human consciousness. Want to guess who won?

Western elections observers have criticized Sunday's presidential vote in Russia, in which President Vladimir Putin's chosen successor won a major landslide. Opposition leaders say the election of Dmitri Medvedev was rigged.

Three northern villages that were home to the Yazidi people, one of Iraq's tiniest minorities, were hit by a string of truck bombs. At least 200 are dead and hundreds wounded. The death toll could rise as bodies are recovered from clay homes that collapsed.

Mattel, the world's largest toymaker, had a reputation for a strong quality-assurance program in China. With many Christmas orders already in the pipeline, manufacturers and suppliers are scrambling to ensure the integrity of their products.

Today, U.S. commander in Iraq Gen. David Petraeus gives his much-anticipated report on the war in Iraq. We'll hear statements from Petraeus' assessment of the war and of the effects of the U.S. troop "surge" ordered by President Bush last winter.

President Bush will speak on nationwide television Thursday night to discuss his Iraq strategy. He is expected to endorse a recommendation by Gen. David Petraeus for the withdrawal of some 30,000 troops by the end of next summer.

It appears that Pakistan pulled off an election relatively free of violence and voting irregularities. Early results give opposition parties of former prime ministers Benazir Bhutto and Nawaz Sharif a big victory. The results could further undermine the power and influence of President Pervez Musharraf.

NPR's A Martinez talks to the Federal Mediation and Conciliation Service's Joshua Flax about the role of mediators in contract standoffs following last-ditch talks between SAG-AFTRA and major studios.

The "magic number" of delegates needed to clinch the Democratic presidential nomination is 2,025. But neither Hillary Clinton nor Barack Obama is close to that number. If that continues, the party's 796 superdelegates may decide the Democratic race.

A temporary version of the law allowing intelligence agencies to conduct surveillance of terrorism suspects without a warrant expired Saturday. A key sticking point is whether to grant retroactive immunity to telecom companies that cooperate with the government.

Neither Barack Obama nor Hillary Clinton may have a clear lead in delegates to secure the Democratic nomination, so both are aggressively courting superdelegates. Democratic Sen. Sherrod Brown of Ohio talks about his role as a superdelegate.

With a close Democratic race for the presidential nominee, the role of delegates and super delegates could become increasingly more important leading up to the Democratic National Convention in August. Former Democratic strategist David Sirota and political legal analyst Stanley Brand explain why superdelegates are important.

Democratic senators Joe Biden of Delaware and Chris Dodd of Connecticut withdrew from the race for the White House after poor showings in the Iowa caucuses. It was Biden's second run for president. He last sought the Democratic nomination in 1988.

Opposition supporters riot in Kenya after President Mwai Kibaki names new members to his cabinet, ending hopes of negotiations for power-sharing with Raila Odinga. Almost 500 people have died since the election Dec. 27 returned Kibaki to power. He is accused of stealing the election.

FDA scientists studying the chemical composition of meat and milk from cloned cattle, pigs and goats say they're as safe as that of their noncloned counterparts. The FDA findings, similar to an EU report issued last week, do not address the ethics of cloning.

How did Sen. John McCain manage to make 150,000 votes enough to win South Carolina when the 250,000 votes he got in 2000 left him a loser to George W. Bush? He had a lot of help from Fred Thompson.

Republican presidential candidate John McCain leads the polls in South Carolina ahead of Saturday's primary. He is emphasizing his national security experience and a message of economic "straight talk" — and downplaying negative campaigning efforts against him.