Snowflakes take on many different shapes, sizes and characteristics, but why?
Why No Two Snowflakes are Identical and 4 Other Fun Facts
Why are no two snowflakes alike?
Is it true that no two snowflakes are identical? Office for Science and Society - McGill University
Who Ever Said No Two Snowflakes Were Alike? - The New York Times
Ask Ethan: Could You Have Two Perfectly Identical Snowflakes?
Snowflakes - No Two Alike?
Five freezing facts about snow to tide you over this winter
Is it true that no two snowflakes are exactly the same? - BBC Science Focus Magazine
How do scientists know that 'no two snowflakes are alike' when all the snowflake haven't been compared with each other? - Quora
Did You Know That No Two Snowflakes Are The Same? Here's Why!
Identical-Twin Snowflakes
14 fascinating physics facts about flakes (of snow)
The Science Behind Why No Two Snowflakes Are Alike
Kenneth Libbrecht interview: A grand unified theory of snowflakes