- October 18, 2000
Topic: Investigator with Dr. W.C. Levengood of Crop and Soil Anomalies in Crop Circles and Sites of Animal Mutilations and Alleged UFO Landings
- May 13, 1999
Topic: BLT Research Team with Dr. W.C. Levengood Investigating Crop Circles in the Physics Lab
- August 11, 1996
Topic: Physical Changes Occurring In Plants Within Crop Circles