Every single time this happens ... levels of humidity and vapour to create a shape that is truly unique. Do different snowflakes make for different kinds of snow (and which is best for a snowball ...

Over the course of 40 years, Bentley perfected techniques for making microphotographs of snowflakes and made thousands of such images (500 of which he donated to the Smithsonian). Every flake in ...

You can discuss how every snowflake is unique, promoting observation and creative thinking. Pair the tray with a ...