Interested in learning more about ocean issues, but short on time? Then World Ocean Radio may be for you. Launched in 2010, World Ocean Radio is a weekly podcast and radio show that offers listeners five-minute audio essays on a wide range of ocean-related issues and recently celebrated its 500th episode. This long-running series is hosted by Peter Neill, founder and director of the World Ocean Observatory (W2O), and produced by W2O in association with WERU 89.9 FM, Blue Hill, Maine. Recent episode topics include the possibilities offered by saltwater engineering (such as electricity generation and desalination for fresh water) and an introduction to citizen science projects that enable ordinary people to contribute to ocean-related research. Listeners are able to stream and download episodes of World Ocean Radio at the link above (which also provides transcripts of each episode), and they can also subscribe via RSS or Stitcher, as well as listen to one of the show's many broadcast affiliates.