In this episode, we're using our zoom ray to zoom way in and answer your questions about the COVID vaccine. What's in the COVID vaccine? How does it work? And how do they make it? We'll also look at how our fight against the new coronavirus has had a huge impact on another virus: influenza. And, we'll head to a stadium to learn what 95% effective means for a vaccine. (Warning: There are seagulls overhead!)

Plus, we'll have a brand new mystery sound and a Moment of Um that answers the question: what do scientists eat in Antarctica?

Read Katherine Wu’s article about what’s happening with the flu this year.

Find the rest of our episodes about coronavirus hereincluding episodes on the vaccine, maskssocial distancing, and how we’re processing this historic time.