If you're planning to ice skate on a local lake or river this winter, you may need to think twice, according to scientists John Magnuson, Olaf Jensen and Barbara Benson of the University of Wisconsin at Madison. Their research is funded by the National Science Foundation (NSF).
From sources as diverse as newspaper archives, transportation ledgers and religious observances, the researchers have amassed 150 years of lake and river ice records spanning the Northern Hemisphere. ...
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