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The U.S. Navy is flying unmanned robotic vehicles to Russia's Pacific Coast, in an effort to rescue the crew of a Russian mini-sub snagged in fishing net along the ocean bottom. About 30 Navy crewmembers from San Diego will use two remotely operated vehicles in an attempt to free the sub and its seven-member crew.

A 2003 State Department memo clearly indicated Valerie Plame's identity was to be kept secret, according to a Washington Post story. Plame, wife of Ambassador Joseph Wilson, is the CIA officer whose identity was made public in a leak to the press.

The rise in the Hispanic population in the United States has meant an increase in Hispanic media outlets: radio stations, newspapers, and television. The boom has implications for the country's diverse Hispanic communities and for advertisers.

As British authorities hunt suspects in two attacks on the London transit system, they are distracted by a fiasco. Saturday, authories said a man shot dead by plainclothes police officers at a subway station Friday was a 27-year-old Brazilian not connected to the bombings. Brazil's goverment wants an explanation.

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.

Hundreds of thousands of pilgrims who flooded into the Italian capital to watch the funeral of Pope John Paul II were unable to squeeze into St. Peter's Square. Many went to ancient Rome's Circus Maximus instead, watching the ceremony on giant TV screens.

In the Miami Cuban community, news of the arrest of Cuban exile Luis Posada Cariles has many people upset. Fidel Castro has asked the U.S. to extradite the Cuban exile, and former CIA operative, for his alleged role in a deadly airplane bombing. It's not clear why or where the U.S. is holding him.

Melissa Block talks with Professor Sarah Binder about the history and tactics of Senate filibusters. Binder teaches political science at George Washington University and is co-author of Politics or Principle: Filibustering in the United States Senate.

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.

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.