Apr 18 Wal-Mart, Nalgene Pull BPA Items After Report Sparks Concerns By PBS News Hour Retail giant Wal-Mart and water bottle maker Nalgene are taking steps to phase out the use of the plasticizer Bisphenol A, only days after a major report linked the omnipresent chemical to a range of possible hormonal and other health… Continue reading
Apr 16 Researchers Track Global Flu Travel Patterns By PBS News Hour If you live in North America, the flu strain that laid you low last winter likely originated in East or Southeast Asia six to nine months before you caught it, according to a new study of the worldwide circulation of… Continue reading
Apr 11 Scientists Create Plan to Save Madagascar Species By PBS News Hour The island nation of Madagascar is one of the world's poorest countries, but it is rich in one resource -- biodiversity. Perched in the Indian Ocean off the east coast of Africa, Madagascar broke from the continent more than 80… Continue reading
Apr 08 After 25 Years, AIDS Vaccine Research Makes Mid-course Correction By PBS News Hour It took 47 years to develop a polio vaccine, 42 to develop a measles vaccine and 105 for typhoid. So historically speaking, at 24 years in, research on the AIDS vaccine is still young. Continue reading
Apr 04 Evidence Shows Earlier Human Arrival in Americas By PBS News Hour A cache of human DNA found in a prehistoric "toilet" suggests that people arrived in the Americas at least 1,000 years earlier than previously thought. Continue reading
Apr 01 Scientists Plot Pollutants’ Path at the Arctic By PBS News Hour The Arctic is a receptacle of the planet's air pollutants -- from forest fires to human-produced carbon dioxide emissions -- and a coordinated international effort is geared toward learning more about pollutants' effects at the top of the globe. Continue reading
Mar 31 Watch Researchers Examine Impact of Exercise on Aging Scientists have coined a new term -- geroscience -- to describe research that aims to slow down aging and delay the onset of age-related diseases like Alzheimer's and Parkinson's. Researchers are studying the underlying genetic causes of aging and effects… Continue watching
Mar 28 Watch After Major Cyclone, Bangladesh Worries About Climate Change Months after Cyclone Sidr killed 3,200 people along the Bangladesh coast, the devastated country turns its attention to climate change. Fred de Sam Lazaro reports on recovery efforts and worries about the long-term future of the country. Continue watching
Mar 28 Phone, Satellite Companies to Redevelop Airwaves for New Wireless Products By Admin, PBS News Hour Last week, the Federal Communications Commission finished auctioning off $19 billion worth of public airwaves after a federally mandated switch to digital television freed up large sections of the nation's wireless "spectrum."… Continue reading
Mar 26 Watch Ice Shelf Disintegrating Off Antarctica Peninsula A huge slab of ice has fallen off the western Antarctic peninsula, threatening the ice shelf behind it. Scientists say the collapse shows how quickly polar changes can occur amid certain climate conditions. A climatologist explains. Continue watching