Drug discovery chemist Derek Lowe joins Adam to break down why producing an effective COVID-19 vaccine is so challenging, the science of how vaccines work, and the issues that arise when pharmaceutical research is conducted for profit. Learn more about your ad choices. Visit megaphone.fm/adchoices See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.