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Studies linking hormones to breast cancer and heart disease have been well-publicized. But a new analysis suggests hormone therapy does not pose equal risk for all women.

MySpace, the online community for music and networking, has hired a former prosecutor from the Justice Department to patrol the site and educate its users about privacy and child-exploitation issues. Hemanshu Nigam also has helped Microsoft develop security and child-safety strategies.

The White House is sending a complicated message about its intentions toward Iran. Daniel Schorr, senior news analyst for NPR, says the administration is attempting to convince Iran that military action is possible, while trying to convince Americans that military action is highly improbable.

Tens of thousands of demonstrators file through Atlanta's streets as part of a national "campaign for immigrants' dignity." In cities nationwide, demonstrators continue to show their opinions on the debate over immigration and border enforcement.

Antiretroviral therapies to treat AIDS have transformed patients' lives and Dr. Michael Saag's practice at the University of Alabama-Birmingham's Center for AIDS Research. But Saag says the therapies have brought new worries, such as concerns about drug resistance and the quality of life for AIDS patients who now live much longer.

Senior news analyst Daniel Schorr says that the recent controversy over secret National Security Agency eavesdropping is putting the idea of inherent presidential powers to the test.

A state judge imposes a $1 million a day fine against the Transport Workers Union for defying a state law that prohibits strikes by public employees. Millions of commuters are struggling to get around New York City after subway and bus workers walked off the job early Tuesday morning.

In their new book Rousseau's Dog, authors David Edmonds and John Eidinow describe a bitter, public dispute between philosopher giants Jean-Jacques Rousseau and David Hume.

Eggs hold symbolic significance for those marking both Easter and Passover. Marie Simmons, author of The Good Egg answers Debbie Elliott's simple question: What's the difference between white and brown eggs?

The subways and buses are operating at full strength again in New York City. The country's largest mass transit system was back on schedule by Friday's morning commute, following an end Thursday to the three-day strike.