What makes a twister twist? Where does acid rain come from? Is ittrue that snow is sometimes green? Or even red? Can it really raincats and dogs . . . and frogs? Join popular ABC-TV weather forecaster Spencer Christian as heexplores the amazing--and sometimes unpredictable--world ofweather. Look inside a flash of lightning. Mix up your own instantrainbow. Find out how caves "sing" and if a tornado can actuallypluck the feathers off a chicken...