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When they spot a predator, black-capped chickadees vary their alarm cries. The warnings help flock mates grasp the relative threat posed by the predator, researchers report in this week's issue of the journal Science.

In the 1990s, Bobby Valentino was part of the teen vocal group Mista. Now he's gone solo, with a self-titled CD and a single, "Slow Down," that's already topped the R&B charts. Ed Gordon talks with Valentino about his burgeoning career and his soulful influences.

David Gray's new album, Life In Slow Motion, is the product of two years of work to evolve as a songwriter. The new release has been described by Gray himself as "the tip of an iceberg" of musical stores built up over time.

Tom Mathews' father was a veteran of the 10th Mountain Division in World War II. His book, Our Fathers' War, contains essays exploring how the conflict affected filial relations for 10 men who served.

Among a group of devotees who collect and restore old stoves -- noting their craftsmanship and superior performance -- one is known as "the stove man." Ed Semmelroth is a legend for his passion and skill in restoring old stoves to nearly perfect condition.

As a Category 4 hurricane, Dennis looked destined to become the strongest storm ever to hit the U.S. Gulf Coast. But then, just before coming ashore, Dennis weakened to Category 3 and was later downgraded to a tropical storm. Sunday evening, residents started to survey the damage.

For decades, visitors to the turn-of-the-century Maymont House in Richmond, Va., have soaked up the excesses of the Gilded Age. Now, Maymont's newly renovated basement provides a different glimpse of life then -- that of the mostly African-American domestic workers.

Primo Levi, an Italian survivor of the Nazi death camp at Auschwitz, wrote about his experiences in such a profund way that his work has inspired people ever since. Now, South African actor Sir Antony Sher has adapted Levi's memoir If This Is a Man into a solo show. Primo opens on Broadway Monday.

Maine lobsterman and scientist Ted Ames tells host Melissa Block about how he has used his biochemistry background -- and a life on the ocean -- to study changing fish populations and develop sustainable fisheries management practices. Ames is one of the 2005 recipients of the MacArthur grants announced Tuesday.

The Army Corps of Engineers has patched-up the floodwalls in and around New Orleans, but the system remains vulnerable. As Hurricane Rita threatens the region, engineers warn that even a few inches of rain could cause big problems in the city.