Snowflakes

[Tilly2]

What I want to know is:-

How do 'they' know that every snowflake is a unique formation of ice crystals?

[douglas9401]

'They' have their ways, Tilly, not for us to delve into their secret world.

or

To do with the way that crystals grow, with infinite possibilities?

[douglas9401]

http://earthsky.org/earth/how-do-snowflakes-get-their-shape