Excellent weekly coverage of the top stories in science and technology.
SEED is a magazine that approaches science from a hip and stylish perspective; but it also accentuates the political relevance of scientific issues. Imagine combining Wired, Scientific American, and The Economist; SEED is something like that. "Science Is Culture" is their mantra, and their Podcasts reflect this focus on the relevance of science to our lives.
Nature Publishing Group produces a rich array of podcasts that highlight stories covered in their journals. There is also a blog on the site that facilitates discussion of each episode. All podcasts are archived on the site back to the first episode in October 2005.
In December 2005, around the time podcasts became popular in the mainstream, Science started producing their podcasts as a pilot project. They have been posting new episodes to their site twice a month since then. These shows contain excellent coverage of articles published in the journal, but with an interesting down-to-earth tone appropriate for any audience.
Sciam.com has two podcast series: 60-Second Science and Science Talk. 60-Second Scienceis posted every weekday and contains 1 minute reports that explore 1 interesting scientific topic each. With this one, you can't claim you don't have time to listen to a podcast. Science Talk, on the other hand, is posted weekly and covers a variety of scientific topics in each 20-minute show.
This weekly show highlights many topics in each 30-minute episode and includes science news stories and interviews with top scientists.