• 6 January 2023: The Problem with Infinity
• 15 July 2009: Forty years from one step
• 23 April 2009: Where Star Trek went wrong
• 4 January 2007: When science goes wrong, redux
• 17 March 2005: When does science go too far?
• 4 April 1991: Music Trip to Orlando, Visit to Cape Canaveral and the Kennedy Space Center