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Can You Pass the President's Adult Fitness Test?
The President's Council on Fitness and Sports has unveiled a fitness test for adults on the Internet. It's similar to one that students take each year, but instead of getting a certificate signed by President Bush, the adults can see how their scores rank nationally. NPR reporters David Malakoff and Jon Hamilton are put to the test.

Gaming Your Way to Fitness
Video games designed to provide a workout are becoming big business. But do these games — such as the Wii Fit, which hits stores Monday — deliver on their fitness promises?

Former Justice Asks Congress for Alzheimer's Aid
Retired Supreme Court Justice Sandra Day O'Connor testifies Wednesday before the U.S. Senate's Special Committee on Aging about her husband's struggle with Alzheimer's. It is the first time O'Connor has spoken publicly and at length about the disease. She urges Congress to speed research on finding a cure. Her husband's diagnosis was the main reason she stepped down from the court in 2005. She says he is "not in very good shape."

Hospital Overwhelmed by Quake Victims
In the city of Chengdu, China, there is a shortage of trained doctors, but plenty of unskilled volunteers. Despite the chaotic scene, workers at Sichuan Provincial People's Hospital are eager for more survivors, even though the hospital is over capacity. Makeshift wards are set up in the parking lot.

Relief Agency Plans for Second Cyclone
Amos Avgar, executive director of the International Development Program of the American Jewish Joint Distribution Committee, just left Yangon, Myanmar. He discusses the devastation he saw in the town hardest hit by Cyclone Nargis.

Alex Chadwick Takes a Sweaty Ride
The <em>Day to Day</em> host has been beating gas prices, even before they were this high; he pedals to work. He takes us along his 5-mile journey from his home to NPR West and shares his thoughts on why it's the ideal way to start a day.

Polar Bear Endangerment Decision Looms
Bush administration officials are under a court order to decide by tomorrow whether to add the polar bear to the list of endangered species. The decision will cap a three-year campaign by environmentalists to show that climate change has the potential to imperil wildlife. Critics say any listing is a bad idea.

Geology, Engineering Contribute to Quake Damage
Monday's earthquake in China's Sichuan province involved a violent fault line and structures that weren't built to withstand the tremors.

Study: Ultrasound Boosts Breast Cancer Detection
Adding an ultrasound exam to a standard mammogram may increase the detection of breast cancer in women at high risk for the disease, a recent study suggests. However, the method is more prone to producing a false positive, possibly leading to unneeded biopsies.

Nissan Builds Buzz with Plans for Electric Car
Despite warning of "tougher times" because of the weak U.S. economy, Nissan Chief Executive Carlos Ghosn said Tuesday that the automaker plans to become the global leader in zero-emission vehicles.

NY Introduces Ambulance for Rapid Organ Recovery
New York City is starting an ambulance service designed to preserve the organs of the newly deceased so that they'll be available for transplant. Proponents say the Rapid Organ Recovery program will save lives. Critics worry that it might divert resources from the treatment of the living.

Strange and Awful Things Sleepwalkers Can Do
A Florida man was just acquitted of lewd conduct charges. His defense? He didn't mean to touch a young girl; he was sleepwalking. While very difficult to prove, the man's defense is at least plausible, according to Dr. Ana Krieger, director of the NYU Sleep Disorders Center and an expert in "parasomnia."

Don't Count on a Doctor on Board
As many as three out of four flights have a doctor, nurse or paramedic on the passenger list. But one doctor advises passengers with chronic medical conditions to make sure they're taking all necessary precautions.

Bill and Melinda Gates Name New Foundation Head
Jeff Raikes, a 27-year veteran of Microsoft, will take over the $37 billion Gates Foundation in September. Bill and Melinda Gates tell NPR that they picked Raikes because he shares their passion to try to help minimize poverty around the globe.

Mammoth Tomatoes Arose from Genetic Mutation
Those softball-size tomatoes at the supermarket get their heft from a simple genetic mutation that creates extra compartments.