Rare North Dakota Ice Disk Found | Video

North Dakota retired engineer George Loegering has found a rare spinning disk of ice in the Sheyenne River, a weather phenomenon experts say likely was caused by cold, dense air, and an eddy in the river. (Nov. 26)



via LiveScience.com http://www.livescience.com/41541-rare-north-dakota-ice-disk-found-video.html