June 15th: The "Little Lark" That Propelled Canada Into the Space Age by Elizabeth Howell | Jun 15, 2010 | Pars3c, Podcast read more
April 8th: Making the VASIMR Engine by kortney.hogan | Apr 8, 2010 | Podcast, Young Astronomers read more
September 25th: Modern Telescopes and Observation Techniques by The Adler Planetarium | Sep 25, 2009 | Adler Planetarium, Podcast read more