What we know and don't know about coronavirus immunity
Some of the first studies on COVID-19 immunity are coming out. Immunologist Marion Pepper explains what is known about immunity and what scientists still don't understand. And, getting school exam results this year during the coronavirus pandemic was never going to be straightforward. Teenagers in Britain and across Europe are discovering it's complicated, and they're not happy. And, protesters in Belarus want change, and they've turned to Soviet-era rock band Kino for a protest anthem.