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)
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)
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