Why do we have seasons A PRIVATE UNIVERSE
{"Image DocumentName": "Why do we have seasons? A PRIVATE UNIVERSE", "Image ImageDescription": "Video made in 1989 at a Harvard University graduation. Asked Reason for Seasons or Moon Phases. Results: 21 of 23 students, faculty, and alumni could not accurately account for the causes of the seasons or moon phases(available from  So we have good company in our mistaken first theory.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}