We may be on the cusp of another ice age for real. The sun has just entered another Maunder period...a cycle with decreased sun spot and solar storm activity and energy output. The last one occurred during the Middle Ages and lasted for 400 years. A miniature ice age resulted. The Thames River froze over and Ice Fairs were held on it. Greenland became almost uninhabitable, and millions died across Europe due to cold and reduced food consumption.