The Right Chemistry with Dr. Joe Schwarcz - Podcasts on the chemistry of everyday life.
Quirks and Quarks with Bob McDonald - Commentaries on everything science.
The Naked Scientist podcasts and cience radio icludes interviews, articles and kitchen science experiments.
A Moment of Science daily 2 minute vignettes that answer the quirky questions of science. Available in audio and video format.
Sixty Second Science from Scientific American - short one minute podcasts covering the science of everday things.
Sketpicality of Skeptic Magazine - podcast challenging topics related to science, pseudoscience, astronomy, the paranormal and more!