There's a project underway to identify a type of American Elm that's resistant to Dutch Elm disease. The U.S. Department of Agriculture is asking people across the country to help them identify healthy trees.
In a World War II era blimp hangar in California, a prototype of a new kind of aircraft, the “Aeroscraft” is being tested. It’s a space-age looking machine that’s almost as big as a football field and able to carry 50 tons or more.
Greg Hampikian is a forensic DNA expert who works using DNA technology to free innocent individuals in prison. He says that new technology is allowing smaller amounts of DNA to be analyzed, which means that more cases can be reopened, but that can also cause problems as there is more room for human error.
Dr. Chiedza Jokonya was in Haiti recently to provide health care. Near Cap Haitien, she found a hospital in crisis - cholera patients lining the hallways. We also check in with a guest from 2006 who was influenced then and now by the federal policy of "Don't Ask, Don't Tell." And we hear from a young couple starting a blue jean business with the help of the stimulus package.
Forty years ago, Mark Cohen moved to Kenya with his wife and toddler in order to complete his doctoral research in archeology. He spent time surveying archeological sites on foot and coming nose-to-nose with African wildlife. That approach, he says in retrospect, was naïve and stupid.
Right now, all over the world, projects are underway to store seeds. Biodiversity has plummeted in the last 50 years, and scientists fear climate change will kill varieties of apples, yams and many fruits and vegetables. Dick talks with seed collectors.
Ben Flanner is a pioneer of rooftop farming in Queens, New York. Preparing his one-acre farm required a lot of trips up the elevator, but he saw a good harvest last fall, and he says he's ready to plant again.