More moisture freezes onto this ice crystal as it falls toward ... He took over 5,300 photographs of snowflakes in his lifetime. Because of Mr. Bentley’s work, meteorologists found there are ...

and it is generally not possible to explain why even simple crystals develop their characteristic shapes. A case in point is the snow crystal, which grows into a puzzling variety of unusual ...

Image caption, From a single ice crystal, these amazing patterns form according to different weather conditions. Snowflakes are ... scientist Wilson Bentley devised a clever way of attaching ...