Covering much the same scientific territory as Carolyn Fisher’s The Snow Show (2008), this distinguishes itself with Cassino’s astonishing photographs of snow crystals. The clear and direct narrative takes readers into the clouds to explain snow-crystal formation (each crystal needs a speck of some earthly substance to grow from) and then zooms in on the actual crystals. Describing the three major types of crystals (star-shaped, plate and columnar), the authors also provide snippets of facts, such as how the molecular structure of water creates the six-sided crystals or the different conditions under which the three varieties form. Aoyagi’s clean ink-and-watercolor diagrams and backgrounds allow the spectacular photographs to take center stage and provide supplemental information. Sure to get young scientists outside in the cold, particularly as it helpfully includes crystal-catching instructions. (Informational picture book. 6-10)
