ScienceThe masks that stop virusesTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceGabriel Borrud and Conor Dillon06/17/2020June 17, 2020Why aren't countries making more masks? Come inside a German "melt blown" factory for a supersonic answer. Listen to DW's science podcast for a different angle on the coronavirus — five minutes every day from Germany.https://p.dw.com/p/3dvVFAdvertisement