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Before IBM had Watson, Westinghouse had Elektro. The Ohio manufacturer built the 7-foot-tall robot as a showpiece for the 1939 World's Fair.

Express Scripts and Medco Health Solutions provide prescription drug benefit services to more than 1 in 3 Americans. The FTC says their union won't stifle competition in the industry, but community pharmacy groups are furious.

Blistering political ads like the swift boat attacks on John Kerry in 2004 may not be as decisive as politicians think. Political scientists say if voters already know a candidate, negative ads don't have much of an impact.

In the Republican race for the presidential nominee, there are three contests Tuesday: Maryland, Washington, D.C. and Wisconsin. Former Massachusetts Go. Mitt Romney campaigned in Wisconsin Monday, where he's expected to win. At an oil company in Milwaukee, he urged Wisconsin voters to help him continue the winning pattern.

The city of Detroit is rapidly running out of cash. Michigan's governor wants the state to either help run the city's finances or impose an emergency manager with total authority over budgetary matters. A final decision will be made this week.

Polar bears live on sea ice but that habitat is slowly disintegrating. Juliet Eilperin of The Washington Post, and Dr. Jeffrey Bonner, President and CEO of the St. Louis Zoo, talk to David Greene about a push to preserve polar bears. The idea is to keep a number of them in captivity to preserve the gene pool .

Cars manufactured in the United States are getting better. Analysts say it feels like the U.S. has entered a "golden age" of vehicle quality and reliability. Quality has been rising over the years, and the gap between the best and the worst is shrinking.

In China, the media is heavily controlled by the government. That reality was clear on Saturday when new restrictions banning commenting were imposed on two twitter-style websites. The government lifted the restrictions Tuesday, but the government certainly made a point about who's in charge.

David Greene talks to journalist and author Lawrence Sheets about his experiences in the former Soviet Union. They also discuss how the anti-Putin sentiment in Moscow is affecting relations with neighboring states. Vladimir Putin just won election in Russia and is returning to the presidency.

Notre Dame faces a juggernaut: the undefeated Baylor Lady Bears and their 6-foot, 8-inch, star Brittney Griner. If Baylor wins, the team will finish the season undefeated and be the first in NCAA basketball to win 40 games in one season.