Apr 26 Watch 20 Years Later, Chernobyl Still Weighs on Nuclear Efforts Twenty years after Chernobyl, the world's worst nuclear disaster, debate resumes over the use of nuclear power. Two experts discuss the what happened at Chernobyl and current concerns over nuclear power. Continue watching
Apr 24 Watch Story of Polio Fight Wins Pulitzer Prize Author and historian David Oshinsky won the Pulitzer Prize in history this year for his work on the subject of polio in America. Continue watching
Apr 18 Watch China Continues Efforts to Limit Access to the Internet In Northern California, a Chinese-born computer scientist is waging a technological war on the Chinese government's Internet restrictions. Following a report on their efforts, two regional experts assess the Chinese government's efforts to control information within its borders. Continue watching
Apr 17 Watch Illinois Community Struggles with Continued Industrial Pollution Exelon Corporation didn't publicly acknowledge at least six spills of water containing radioactive tritium until recently--even though the first one happened in 1996. Residents of Will County, Illinois are now outraged and worried about tritium's effect on their health. Continue watching
Apr 12 Watch California Works to Prepare for Next 'Big One' The 1906 earthquake killed about 3,000 San Franciscans, yet despite modern building codes and materials, scientists fear a similar earthquake could be even more devastating today. Continue watching
Apr 06 Watch Fossil Discovery May Link Life on Land and Water Scientists discovered fossils on Ellesmere Island in the Canadian Arctic that they believe are a crucial missing link in the evolutionary chain between life in the water and on land. One of the lead researchers analyzes the implications of the… Continue watching
Apr 04 Watch Louisiana Struggles to Maintain, Improve Wetlands Even before Hurricane Katrina, Louisiana was losing miles of wetlands every year due to its systems of levees and canals. Now, the Army Corps of Engineers has asked the people of New Orleans to comment on a plan that includes… Continue watching
Apr 04 Watch Salmon Fisheries in Northwest See Trouble Ahead Salmon fisheries in the Pacific Northwest are worried that conservation efforts and environmental problems could devastate the lucrative spring season. Continue watching
Mar 31 Watch Center Gives Hope to Muscular Dystrophy Patients Children's National Medical Center in Washington, D.C. is doing pioneering research and treatment for muscular dystrophy using interdisciplinary teams of doctors and scientists focused on a common problem. Continue watching
Mar 29 Security Council Calls for Iran to Stop Uranium Enrichment By PBS News Hour The U.N. Security Council unanimously approved a statement Wednesday demanding that Iran suspend its uranium enrichment program, marking the first direct request from the Security Council concerning Iran's nuclear program. Continue reading