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
Mar 26 U.S. Seeks AIDS Vaccine Research Overhaul By Admin, PBS News Hour The head of the federal government's AIDS vaccine research program said Tuesday that the focus should shift from large-scale human vaccine trials back to basic research. Continue reading
Mar 24 Watch Water Recycling Efforts Spark Policy Debate in California In water-strapped southern California local authorities are exploring new approaches to water usage, launching new programs that send highly treated wastewater back into the groundwater supply to serve as drinking water. Continue watching
Mar 24 Watch Digital Files Put Medical Records at Doctors’ Fingertips New technologies now allow doctors and hospitals to keep electronic health records, but the U.S. has been slow to switch formats. Susan Dentzer reports on the advantages and difficulties that some hospitals are facing in their efforts to digitize medical… Continue watching