151; -- Consider the iconic six-sided snowflake: lacy ... Libbrecht has been studying the physics of snow formation for more than a decade. In the late 1990s, he ran across an article describing ...

OTTAWA, Ill. Falling at speeds of up to 220 mph, nearly 140 skydivers have shattered the vertical skydiving world record by flying heads-down in a massive snowflake formation in Illinois.