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Look for animal tracks in the snow

TRACKS. First picture, left to right: mouse, fox, skunk, human, squirrel. Second picture, left to right: bird, raccoon, domestic cat, deer, rabbit.

Learn About Snow Crystals (Snowflakes)

Watch a snow crystal grow  in a lab, by time lapse:
https://vimeo.com/312985344.

Watch this video on "Inside Science" about Snowflake photographer Wilson Bentley: https://www.youtube.com/watch?v=eso-1knRx2U

A Japanese physicist, Ukichiro Nakaya, created the Snow Crystal Morphology Diagram in the 1930s. Other scientists built on his work. 

 Snow researchers grow snow crystals in a "cold lab" at different temperatures and humidity levels and observed the different forms. ​

Sketches of tracks are copyright Lucille Gertz, from Let Nature Be the Teacher, published by Habitat Institute for the Environment. Used by permission of the author.