This is a special joint episode of Plants of the Gods and Brainforest Café.

Plants are virtuoso chemists. Some create molecules that closely resemble the neurotransmitters shaping human consciousness — a mystery that fascinates ethnopharmacologist Dennis McKenna, PhD.

In Part One of this episode, Dennis explains why psychoactive plants are powerful tools for understanding the relationship between the brain and the mind, and reflects on the legacy of his late brother, Terence McKenna, whose work pushed the boundaries of psychedelic thought. The brothers' experiences with the plant medicines of Indigenous peoples in the Colombian Amazon would go on to shape Dennis' scientific career in profound ways.

Season 8 kicks off February 23 with an interview featuring Dennis McKenna, PhD — a renowned ethnopharmacologist who has spent more than 40 years researching the therapeutic potential of Amazonian plant medicines. Stay tuned for the full interview!

Ethnobotanist Dr. Mark Plotkin discusses Brugmansia, some of the most beautiful hallucinogenic plants in the botanical world. Their bright flowers hang like sacred trumpets and have long been used by traditional healers of the Andes-Amazon region as an important component of their medicine chest. Closely related to the 'hexing herbs' of European witches of the Middle Ages (as detailed in an earlier episode), these fascinating plants can heal - or harm.