What should I ask Michael Pollan?

I will be doing a Conversation with Tyler with him, no associated public event.  Here is his home page, and the About section.  Here is Wikipedia on Pollan.  Here is a Sean Iling Vox interview with Pollan, on his recent work on LSD and other psychedelics, and his most recent book is How to Change Your Mind: What the New Science of Psychedelics Teaches Us About Consciousness, Dying, Addiction, Depression, and Transcendence.  Pollan is perhaps best known for his books on food, cooking, and food supply chains. 

So what should I ask him?