We're looking at the world of vaccine hesitancy: why are some folks unsure about getting a COVID vaccine, and how we can help? Plus, in the news, home, or away - should we be able to get away for a holiday abroad this year? Also, 'sea snot' paralyses the Turkish coastline; and how just seeing another ill bird at a distance boosts a canary's immune system. Like this podcast? Please help us by supporting the Naked Scientists