- HG Gray gives lecture on Energy to 500 HS students at East LA College.
- HB Gray gives the Watson public lecture at Caltech on Powering the Planet with Solar Fuels
- HB Gray gives the Chute Lecture at Dalhousie University
- HB Gray on the CBC Radio program Maritime Noon
- BP Caltech Berkeley - Methane Conversion Cooperative Review Gray, Peters, and Winkler attend program review by Steve Koonin at the Ritz Carlton Hotel in Pasadena, CA
- HBG Lecture to the Friends of Caltech: Powering the Planet with Solar Energy
- HBG Delivers the Ernest H. Swift Lecture at Caltech, 2006
