Snow is made up of trillions of tiny ice crystals to make snowflakes, with not one alike. Here's how they form.

The largest snow crystal ever measured was 10 millimetres across, discovered by Kenneth Libbrecht, who photographed the record-breaker in Ontario, Canada, in December 2003. Libbrecht is a ...

but these are freshly fallen snowflakes, or snow crystals, resting on wool. They are around 1 millimeter in size and were captured using a simple, cheap photography technique. When the snow starts ...