In this intriguing combination of poetry and nonfiction, each season is given three double-spreads, containing a haiku and a science question-and-answer. In Spring, for example, “Lily hears thunder. / ‘You don’t have to yell!’ she calls. / Still, the sky grumbles.” The sidebar asks, “What makes a thunderstorm?” and explains how hot air rising quickly causes the electrical buildup that results in thunder and lightning. The questions are relevant to children (“Why do I sneeze?”) and the answers clear and thorough. Lin’s vivid gouache illustrations and multi-ethnic characters Lily, Owen, Ki-ki and Kevin are terrifically appealing. If the haikus aren’t quite to the level of Jack Prelutsky’s If Not For the Cat (2004) or George Shannon’s Spring (1996), that’s a small quibble given that this has the potential to interest children in both poetry and science. (Picture book/poetry/nonfiction. 5-10)