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Last winter, a scientist at Los Alamos National Laboratory began a Web log, or blog, for employees to post concerns and complaints about fixing problems at the government nuclear facility. But now, some members of Congress who've seen the blog see it as a reason to shut Los Alamos down.

The Central America Free Trade Agreement is as controversial in other countries as it has in the United States. For Honduras and other relatively poor countries, the consequences of free trade with the world's largest economy could be enormous.

Time is running out to save the endangered northern right whale. But researchers continue to comb the seas in search of the elusive mammal, hoping to find a way to prevent its extinction.

As U.S. officials announce they've held secret talks with North Korean officials, the world continues to work toward defusing the North Korean nuclear threat. But China shows few signs of stepping up economic sanctions on Pyongyang, fearing sanctions could send a wave of refugees across its border.

Michele Norris talks with Professor Jack Pitney about the campaign promises made by Los Angeles mayor-elect Antonio Villaraigosa, and the challenges he will face trying to fulfill them when he takes office. Pitney is a professor of government at Claremont-McKenna College in California and is the author of The Art of Political Warfare.

As some of the world's best yo-yo performers stop by the Smithsonian's National Museum of American History, we take a look at an enduring toy and talk to the curator of the museum's collection.

As Israel prepares to withdraw from the Gaza Strip, a new independent analysis is raising questions about the Palestinian security services' ability to control the area. The report describes the security services as underarmed, overstaffed and undermined by corruption.

TV critic David Bianculli reviews Over There, the new Stephen Bochco series about a U.S. Army unit arriving in Iraq for its first tour of duty. It premieres Wednesday night on the FX network.

Ian McEwan is the author of the best-selling novel Atonement. His latest novel, Saturday, takes place during one single day of a neurosurgeon's life. It is set in a post-9/11 world.

Frankie Andreu, a nine-time Tour de France participant, is providing commentary on this year's race for the Outdoor Life Network. He looks on as Lance Armstrong sails toward his seventh consecutive Tour victory.