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Dig into Montana Before History: 11K Years of Hunter-Gatherers in the Rockies and Plains by D. H. MacDonald, Ph.D. See our online store book collection.
Two snowflakes that look very much alike!
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Nancy Knight/NCAR

Can Two Snowflakes Look Alike?

Even though most snowflakes have a hexagonal structure, there are many ways that water molecules can arrange themselves as the water freezes.

Some people say that there are no two snowflakes alike. However, snowflakes can look alike. Scientist Nancy Knight from the National Center for Atmospheric Research found the two simple snowflakes pictured at the left. They look pretty much identical, don't you think?

Last modified January 29, 2007 by Lisa Gardiner.

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The Spring 2010 issue of The Earth Scientist, focuses on the ocean, including articles on polar research, coral reefs, ocean acidification, and climate. Includes a gorgeous full color poster!

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