Each crystal forms around a particle of dust. All have a 6-fold symmetry, but no two have ever been found with exactly the same shape. Their variety and complexity is breathtaking.
Frozen Planet, 1.01
“A male polar bear is searching for a mate, willing females are few and far between. And the sea ice in which he travels will soon melt and vanish. He’s running out of time to find a mate in this fast, frozen desert. Ten miles ahead a single female without cubs, exactly what the male is seeking. He seems to relish her scent even though she’s miles away. This is an exciting prospect. She’s clearly giving off the right signals. He locks onto her tracks, eager not to lose her trail. The search is finally over. The male could kill her if he chooses, but the male has other intentions.”
“Over one third of our planet is frozen, and yet the icy worlds of the Arctic and Antarctic are as alien to most of us as the surface of another planet. They are places of superlatives; from ice caps that hold nearly 80% of our planet’s fresh water, to frozen forests that encircle the entire globe.These are places that feed our imaginations. Places that seem to be borrowed from fairy tales. They are dominated and shaped by the ice, both by it’s coming and by it’s going. This is our planet’s last true wilderness.”