If You See the Sky Turning Green, Find Shelter Fast

Tuesday, July 5, 2022. Shortly after a heavy storm, the sky over South Dakota in the US was still overcast. Locals finally went outside and saw that the sky had an intense dark green hue, and they'd never seen anything like that before. People said that it looked like something straight up from science fiction or even a horror movie. So… What happened there? Was it caused by humans or by nature? Let's find out.