This is SCIENCE FRIDAY. I'm John Dankosky, sitting in for Ira Flatow. Scientists have long been studied amyloid beta, those sticky protein fragments that build up in the brains of Alzheimer's patients. What you may not know is that amyloid beta is produced in everyone's brain, including my brain as I speak to you right now.
According to Rolling Stone magazine, sales of vinyl albums continue to grow, setting a new record in 2010. Does vinyl reproduce sound better, or is it just a trend? Two audio experts join guest host John Dankosky to talk about the science of audio, and how perceptions can shape the sound experience.
NYU psychology professor Gary Marcus took up guitar at the relatively ancient age of 38, by starting with the video game Guitar Hero. Marcus shares his experiences and insights on the science of learning, which he's gathered in a new book Guitar Zero: The New Musician and the Science of Learning.
Lt. Col. Daniel Davis ignited a controversy when he wrote that what he saw in Afghanistan "bore no resemblance to rosy official statements by U.S. military leaders." U.S. Rep. Jim McGovern (D-Ma), defense analyst Tom Donnelly and McClatchy Newspapers correspondent Johnathan Landay discuss the realities of the war in Afghanistan.
On September 17, 2011, hundreds of people gathered in Lower Manhattan to protest the growing wealth gap and Wall Street's involvement in the economic crisis. Five months later, most of the Occupy encampments across the country have been disbanded and the future of the movement remains uncertain.