The Cloud Appreciation Society’s monthly cloud picture for November showed a mysterious ring in the cloud layer over Warwickshire, England. Where did it come from? You can read the detective story at EarthSky at https://earthsky.org/earth/mystery-cloud-appreciation-society-pretor-pinney-nov-2016. The Cloud Appreciation Society is a great place to look at other pictures of clouds too. You can visit them at https://www.cloudappreciationsociety.org.
