Bill McKibben is a noted environmentalist, author, educator, and activist. He famously wrote the book The End of Nature 3 decades ago, and most recently in his book Falter he explores what it might mean for us to come to the end of our civilization rope and what do we do next. He is the founder of 350.org global Grassroots movement for environmental advocacy, justice, and divestment from petrol capitalism.

Dr. Steven Gundry is a medical doctor, clinician, researcher, and a well-known author who has spent the last two decades studying the microbiome and helps patients use diet and nutrition as a key form of treatment. He retired as one of the world’s top cardiothoracic surgeons to teach patients how to eat, guiding them on how to get ahead of the problem, not fixing it after the fact.