NASA
Sci Jinks: How Do Snowflakes Form?
Is it true that no two snowflakes are alike? Take a look at the details that make up a snowflake to find out if the statement holds any truth.
California Institute of Technology
Things You Always Wanted to Know About Snow Crystals
Have you ever wondered if it's true that no two snowflakes are ever the same or why snow is white? Find out the answers to these questions and others here!