This is SCIENCE FRIDAY. I'm Flora Lichtman, filling in for Ira Flatow today. If you could count up all the bacteria in your house, how many different species do you think you'd find - 50, a couple hundred? How about thousands, with an S at the end? My next guest had volunteers swab surfaces in their home - pillowcase, the TV screen, the toilet seat - to see what might be living there. And in each of the 40 households, the same spots were swabbed.
In parts of the southeastern US, aggressive fire ants have been driven out by an even more recent arrival, the tawny crazy ant. Edward LeBrun, a researcher at the University of Texas at Austin, describes the newcomers and how one invasive species can out-invade another.
This is SCIENCE FRIDAY. I'm Flora Lichtman. You've likely heard of the legendary explorers Lewis and Clark, but maybe not of the U.S. Army explorer Stephen Harriman Long, an engineer who led a scientific expedition through the Great Plains 15 years after Lewis and Clark.
His expedition traveled through Oklahoma, Kansas and Nebraska. And what did his crew make of "America's Breadbasket"? A place wholly unfit for cultivation or agriculture, they said. On a map, the explorers labeled the Great Plains as the Great American Desert.
This is SCIENCE FRIDAY. I'm Flora Lichtman, filling in for Ira Flatow today. Last year, researchers reported a breakthrough in treating Alzheimer's disease. They'd found a drug that appeared to reverse the symptoms of Alzheimer's in mice. The drug was already on the market, approved by the FDA to treat a type of skin cancer, meaning Alzheimer's patients could ask their doctors for a prescription, and some did.
The mythology surrounding The Doors has centered largely on its lead singer, Jim Morrison, who died under mysterious circumstances in 1971. Morrison is still considered one of rock music's tortured poets and sex gods, but instrumentally, The Doors' distinctive sound was based on Ray Manzarek's keyboard playing. His are the riffs made famous in such songs such as "Riders on the Storm," "Break on Through" and "People Are Strange."
President Obama is once again calling for the prison at Guantanamo Bay to be shut down, even though new polls suggest most Americans want it to stay open. But the chorus of critics has gained one surprising member: former Guantanamo Chief Prosecutor Morris Davis. Host Michel Martin talks with Davis about why he now feels the facility should be closed.
California just unveiled a wide array of choices for the 5.3 million people expected to qualify to buy coverage through its online marketplace established by the federal health overhaul.
It's the first disclosure of prices in the nation's most populous state for individual health insurance that complies with the Affordable Care Act, and the menu of affordable options surprised some consumer advocates and analysts who had been expecting premiums to be much higher.
A longer version of this interview was originally broadcast on June 28, 2012.
Marcus Samuelsson owns two restaurants in New York City and two restaurants in Sweden. He's cooked for President Obama and prime ministers, served as a judge on Top Chef and Chopped, and recently competed against 21 other chefs on Top Chef Masters. (He won.) He's the youngest chef ever to receive two three-star ratings from The New York Times.
Irish banking officials should have known there were problems with the controversial 10-euro coin commemorating James Joyce, according to Ireland's RTE News. The coin misquotes the author's Ulysses, and bears an image of Joyce that his estate did not approve.