The death rays that guard life: We can use ultraviolet light to disinfect public spaces

We disinfect water before we drink it. Germicidal ultraviolet could make airborne disease as rare as those carried by water. You can see the images, graphs and read the article at worksinprogress.co/issue/the-death-rays-that-g… (youtube.com/redirect?event=video_description&a…)
And you can find the rest of Works in Progress at worksinprogress.co
Words by Gavriel Kleinwaks & Karam Elabd
Read by Stuart Ritchie
Music by David Hackett