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Researchers have put a theoretical height limit on the world's tallest trees. According to an article in the science journal Nature, it's difficult for California redwoods to drag water up much higher than 426 feet. NPR's Ketzel Levine reports.

Wynton Marsalis plays the trumpet — he's not just a Grammy award winning trumpet player, but a Pulitzer award-winning trumpeter. Wynton has released his first small ensemble jazz cd in 5 years. It's called The Magic Hour. Reviewer Jim Fusilli finds delight in the record, with clever performances. He also finds some of the jazz Wynton plays sometimes backward looking.

Four U.S. soldiers are killed and six are wounded as insurgents fire on a base north of Baghdad. Dozens of Iraqis are killed in rocket attacks, roadside bombings and fighting with U.S.-led troops around the country. An the oil terminal off the southern city of Basra comes under attack, apparently by suicide bombers. Hear NPR's Cheryl Corley and NPR's Philip Reeves.

She wrote the screenplay for the new movie Mean Girls. It's based on the book, Queen Bees and Wannabes, by Rosalind Wiseman. Fey also co-stars in the film, along with Lindsay Lohan, Tim Meadows, Amy Poehler and Ana Gasteyer. Fey is co-head writer and writing supervisor for Saturday Night Live. She is the show's first female head writer. She also co-hosts SNL's Weekend Update. She and the writing staff won an Emmy Award for their work in 2002. Before SNL, Fey wrote and performed for the famed Second City in Chicago.

It's been 10 years since South Africa held all-race elections and ended apartheid. The country has been been more successful than other African nations in its transition to democratic rule. Its stability is due in large part to Nelson Mandela, the man who ended apartheid and became the nation's first post-apartheid president. NPR's Jason Beaubien reports.

The Supreme Court hears arguments on whether Vice President Dick Cheney must reveal details of his energy task force, in response to lawsuits from two groups. Solicitor General Theodore Olson, defending the government, argues that the constitution allows the executive branch to gather private advice. The groups suing say industry input into U.S. policy should be public. NPR's Nina Totenberg reports.

President Bush says the just-released President's Daily Brief document from August 6, 2001, lacked enough information to prevent an attack on the United States. Bush also said U.S. troops in Iraq will have as many reinforcements as they need. Bush spoke with reporters Sunday morning after meeting with troops at Fort Hood, Texas. Hear NPR's Liane Hansen.

The Bush administration decides to include salmon bred in hatcheries in its count of wild salmon populations. The result could be that some species will soon be deemed healthy and removed from the Endangered Species list. Hear NPR's Robert Siegel and NPR's Elizabeth Arnold.

Fearing they might be in the midst of a burglary, they called 911. When police arrived and checked upstairs, they found the suspect: a working Roomba robotic vacuum.

Chicago has a long history of firehouse dogs. Brothers Trevor and Drew Orsinger have put together a book -- The Firefighter's Best Friend -- tracking their lives and legends. The Orsingers speak with NPR's Liane Hansen.