Chain reactions are discussed in Reading Rainbow: If You Give a Mouse a Cookie, as children learn about how one event can cause another, and how this can go on. The child in the featured story, written by Laura Joffe Numeroff, sets off a series of reactions when he hands a cookie to a mouse. Viewers will visit a bowling alley with host LeVar Burton, and experience the reactions set off by the motion of the bowling ball. A master at setting up domino chain reactions demonstrates the intricate setups that can be achieved using ordinary dominoes. ~ Alice Day, Rovi