Everybody loves fireworks--but why? Behind the dazzling displays and fiery explosions is a colorful past as well as a complex and secretive science that goes back over 1000 years. First discovered by the Chinese, who used firecrackers to scare away evil spirits, fireworks continue to thrill millions each year with their beauty and power. Join NOVA and travel to Italy, England, and Pennsylvania to discover the chemical secrets that put the bang in the rocket and the fizz in the Roman candle. Meet the Zambelli family, the "First family of fireworks," and see the spectacular results of secrets passed down through generations. Watch master pyrotechnicians show how intricate fireworks displays are created. Discover how elaborate computer controls turn a celebration at Pittsburgh's Three Rivers Stadium into amazing split-second science. And enjoy some of the world's most astounding public fireworks displays, including the record-setting millennial celebration at the Eiffel Tower.