Seems like the end of a lecture? Presented at the fifth annual Seeds of Change conference, titled The Bioneers.

Thanks to We Plants Are Happy Plants on Youtube for the upload

Full-length, 7.5 hour, 4-DVD set exists with Sound Photosynthesis

Terence McKenna on Daryl Gates radio show circa 1993. Gates was the Chief of Police of Los Angeles, founder of the D.A.R.E.