As scientists have been scrambling to find new and better ways to treat covid-19, they’ve come across some unexpected allies. Invisible and primordial, these protectors have been with us all along. And they just might help us to better weather this viral storm.

To kick things off, we travel through time from a homeless shelter to a military hospital, pondering the pandemic-fighting power of the sun. And then, we dive deep into the periodic table to look at how a simple element might actually be a microbe’s biggest foe.

This episode was reported by Simon Adler and Molly Webster, and produced by Annie McEwen, Pat Walters, Simon Adler, and Molly Webster, with production help from Tad Davis.

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