The Quirks and Quarks podcast is full of very interesting scientific material Please go to their webpage to find a complete listing of many high quality audio programs: http://www.cbc.ca/quirks/podcast.html. Also subscribe to the podcast via their RSS feed: http://www.cbc.ca/podcasting/includes/quirksaio.xml As salubrious as the sea might seem, it's in pretty bad shape. In fact, it's fair to say that the global oceans are in a state of crisis and nobody is more aware of this than the scientists studying these troubled waters.