Kenneth LibbrechtKenneth Libbrecht is a professor of physics at Caltech, where he studies the molecular dynamics of crystal growth, especially how ice crystals grow from water vapor, which is essentially the physics of snowflakes. He has authored several books on thi topic, including The Snowflake: Winter's Secret Beauty, The Art of the Snowflake, and Ken Libbrecht's Field Guide to Snowflakes. He lives in Pasadena with his wife, Rachel Wing. They have two children. Read More Read Less