Here I talk with Zach Bush, MD, a doctor with a background in endocrinology who "went holistic" and turned toward gut/brain health, the microbiome, and soil science. Our conversation covered a lot of ground: evolution, the importance of biological diversity for personal, social, and ecological health, the inventive fecundity of life, the role of viruses in sharing genetic information, and more. I expect this conversation will help expand people's horizons in trying to understand health and sickness in the Covid era. Del Bigtree podcast: https://www.youtube.com/watch?v=xXI0UEmCsEw About Zach: https://zachbushmd.com/video/the-highwire/