Using a whimsical model made of a tiny staircase, wind-up penguins, and a bicycle tire, Bill Nye demonstrates the phases of the water cycle: evaporation, condensation, precipitation, and collection. With more than 16 Emmys® to its credit and legions of fans, it's easy to see why the "Bill Nye the Science Guy" show is one of the most popular educational series of all time. Beloved by teachers and students alike, Bill Nye and his unique brand of way cool science make complex science principle