The following is a short list of some chemistry-related web sites:
Built around the latest research published in the journal Science, these sophisticated podcasts are interviews with authors of recent papers. The interviewer elicits the story behind the research. These are useful professional development tools for science teachers who want to keep up with what's "cool" in the world of science.
Science Update Podcast
Produced by the American Association for the Advancement of Science, this series of one minute since and technology podcasts offers a wide variety of contemporary topics ranging from the physics of sound to the environmental issues.
Shows run between two and ten minutes and are supplement NOVA programming and promote upcoming shows.