Bang, sparkle, burst, and boom

Fireworks put on a dazzling, colorful chemical show.

By Emily Sohn, 00:00 AM June 20, 2005

Sparkling blue flashes. "Ooh!" Cascading streaks of red light. "Aah!" Sizzling green explosions. "Wow!"

 

For many people in the United States, the Fourth of July means one thing: Fireworks. And they're not alone.

 

 

 

 

 

 

 

 

 

 

 

 

 

Independence Day fireworks at Riverside Park in Yankton, Missouri.

 

Independence Day fireworks at Riverside Park in Yankton, Missouri.

 

National Park Service photo by Linda Gordon Rokosz

"Every country, it seems, has a fireworks day," says John Conkling. He's a chemist and fireworks researcher at Washington College in Chestertown, Md. "Peop...

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