As winter settles in, many of us are getting an up-close look at more snowflakes than we might care to. Let's take a moment to look at just what forces are shaping (literally) our winter weather.
Top image: Alexey Kljatov
Earlier we took a very, very close look at a series of snowflake close-up shots taken by photographer Alexey Kljatov's. Commenter raiju filled us in on why some consistent geometric patterns were emerging: