In recent years, a number of medical organizations and institutes have created sites that feature weekly podcasts, and this particular one from Johns Hopkins Medicine is a nice find. Started in October 2005, each podcast lasts from five to seven minutes and features a "lively discussion of the week's medical news and how it may affect you." Past topics have dealt with the risks of not immunizing...

The Distinctive Voices programs offered by The Jonsson Center highlight "innovations, discoveries, and emerging issues in an exciting and engaging public forum." The Jonsson Center is in Woods Hole, Massachusetts, and all of the programs are open to the general public. For those people who can't make it over to Woods Hole, there is this site, which contains videos and audio versions of the talks...