David Gornoski sits down with anesthesiologist Dr. Lewis Coleman for a conversation on why Co2, despite being a trace gas, is critical to life. "We came from hell," Dr Coleman says. What does this mean? How can stress theory benefit science? If Co2 is key to life why is there so much oxygen in the atmosphere?

Dr. Coleman's website here. Follow David Gornoski on X here. Visit aneighborschoice.com for more