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Apostle Islands National Lakeshore

National Park Quiz 39: Winter

This week’s quiz will find out if you are a winterwise park visitor. Answers are at the end. If we catch you peeking, we’ll make you explain why the Bergeron-Findeisen process grows snowflakes only because the equilibrium vapor pressure of water vapor with respect to ice is less than that with respect to liquid water at the same subfreezing temperature.

National Lakeshores Threatened by Non-native Species

Loons, mergansers, cormorants and other waterfowl are dying by the thousands in the Great Lakes due to an invasion of non-native species that are threatening to turn the lakes' ecosystem upside down. At Sleeping Bear Sand Dunes National Lakeshore even piping plovers, a threatened species, are dying.
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