Do all diseases originate from animals? Did covid-19 escape from a lab in China? Are airplanes safe to fly during these pandemic times? Dr. Michael Greger, the author of How to Survive a Pandemic answered those questions and more in our recent conversation.

Plus – we have a lightning round covering UV light, whether any medications work, herd immunity and why distancing is so important. And he tells us why he's worried about mask-wearing (spoiler-he DOES believe they work!)