A monthly podcast featuring Johns Hopkins University researchers and scholars in lively conversations about the most interesting ideas in the sciences, humanities and social sciences. http://www.jhu.edu/news/podcasts Elizabeth Tracey Interviews with the world's top researchers in the sciences, humanities and social sciences A monthly podcast featuring Johns Hopkins University researchers and scholars in lively conversations about the most interesting ideas in the sciences, humanities and social sciences. en-us The Johns Hopkins University Thu, 12 Jul 2007 09:30:00 EST Johns Hopkins University Office of News and Information dgips@jhu.edu no dgips@jhu.edu http://www.jhu.edu/news/podcasts/images/great_ideas.gif http://www.jhu.edu/news/podcasts A monthly podcast featuring Johns Hopkins University researchers and scholars in lively conversations about the most interesting ideas in the sciences, humanities and social sciences. http://www.jhu.edu/news/podcasts/mp3/riess1.mp3 It makes the universe grow at an ever-expanding rate. It accounts for as much as 70 percent of the energy/mass total in the universe. But it's only recently been discovered and no one really knows what it is. Astrophysicist Adam Riess discusses "dark energy." Riess led the team that published the first scientific paper on the phenomenon. Elizabeth Tracey Thu, 12 Jul 2007 15:20:00 EST http://www.jhu.edu/news/podcasts/mp3/riess1.mp3