Dec 30 Watch Students, Scientists Build Biological ‘Machines’ Student participants in the 2008 International Genetically Engineered Machine Competition crafted biological "machines," or living organisms, using original combinations of DNA and other organic material to help tackle environmental and health problems. Tom Bearden reports. Continue watching
Aug 31 Watch California Moves to Be First State to Limit Greenhouse Gases California Gov. Arnold Schwarzenegger and Democratic lawmakers reached a landmark agreement on a bill requiring companies to cut output of greenhouse gases by 25 percent by 2020. Experts discuss the national implications of California's move to curb emissions. Continue watching
Aug 04 Watch Deadly Heat Wave Reignites Climate Change Debate A front of cool air moved over the East Coast Friday, bringing an end to a record-breaking heat wave that started last week in California and is blamed for nearly 200 deaths. Climatologists discuss the debate over the Earth's changing… Continue watching