https://medium.com/@ra.hobday/coronavirus-and-the-sun-a-lesson-from-the-1918-influenza-pandemic-509151dc8065 Coronavirus and the Sun: a Lesson from the 1918 Influenza Pandemic Richard Hobday Mar 10 · 6 min read Fresh air, sunlight and improvised face masks seemed to work a century ago; and they might help us now.