On a winter day, a snowflake can look like a tiny work of art, with six delicate arms branching outward in nearly identical patterns. For centuries, people have admired this symmetry and wondered how ...

SALT LAKE CITY -- Curiously, one thing you will never find on the side of a snow covered mountain or in the last snowman you built is an eight-sided (or four- or five-sided) snowflake. What makes ...