2008, November - Catania Observatory - Understanding the Nature of Dark Energy
2008, July 16 - Conference on Education, Portland (Maine) - Wonder at the source of the scientific inquiry
2008, July 10 - CdO Turin - Solo lo stupore conosce
[list to be updated]
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2006, January 11 - Washington DC - Press Conference at the 207th Meeting of the American Astronomical Society: The ACS image of the Orion Nebula
2006, January 11 - Washington DC - Special Session of the 207th Meeting of the American Astronomical Society: The HST Survey of the Orion Nebula
2005, November 17 - Washington DC - George Washington University - Wonder at the Origin of Scientific Inquiry
2005, June - Taormina (Italy) - Scientific Detector Workshop - The second generation of IR detectors for WFC3
2005, May 19- Acireale (Italy) - IAU Symposium 227- The HST Survey of the Orion Nebula Region
2005, March 31 - Space Telescope Science Institute: The Physics of Infrared Detectors
2005, February - Space Telescope Science Institute: Effects of Massive Stars on Star Formation
2005, January 12 - San Diego CA - Talk at the 205th Meeting of the American Astronomical Society: The HST Survey of the Orion Nebula Cluster
2004, February 16 - STScI - Star/ISM Journal Club: Mass accretion in Orion