Footsteps Through Snow

Trudging along in the snow, you think of a warm place you’d rather be. Or maybe the brisk, clean air feels good in your lungs. Stick out your tongue and catch a falling snowflake. Snow is formed from water molecules crystallizing out of the air, so they aren’t as dense as normal ice. The number of ways the crystal can form are nearly infinite, which is why they say no two snowflakes are identical.