On the race to develop a vaccine for the novel coronavirus, and why the fastest way to test a vaccine poses huge ethical questions. Plus, why so many people are convinced that they had covid-19 already.

Times are changing. The president's message is not.

Post Reports is the daily podcast from The Washington Post. Unparalleled reporting. Expert insight. Clear analysis. Everything you’ve come to expect from the newsroom of The Post, for your ears. Martine Powers and Elahe Izadi are your hosts, asking the questions you didn’t know you wanted answered. Published weekdays around 5 p.m. Eastern time.