Rare flakes

Rare stud snowflakes. These travelers from a great height are formed only in very cold temperatures.

In New York, an autodidactic research scientist named Vincent J Schaefer created the first artificial snowflakes in a "cold box" into which he breathed. The moist air of his breath condensed into snow clouds. Later, he actually caused snow to fall in nature by using dry ice.

The reader is also referred to avalanche, glacier, hail, sleet, snow blindness, snow line, snowplow, and snowshoe.