Eco-Friendly Fireworks Offer Safer Pyrotechnics

In a 2007 study, researchers found that perchlorate levels spiked more than 1,000 times higher than normal in parts of a small Oklahoma lake within 14 hours after a Fourth of July fireworks show. It took up to 80 days for levels of the chemical to return to where they started, the team reported in the journal Environmental Science & Technology.

"If you have a place where pyrotechnics are shot over and over again for years and years," Chavez said, "you will have a build-up of these toxins in the environment."

In the last two or three years, scientists have come up with some "greener" alternatives. Hiskey's company, for one, has developed fireworks that burn nitrogen-based fuels instead of carbon-based versions, making perchlorate unnecessary. The result is a cleaner burn, and with less smoke to obscure the color, these fireworks also contain 10 times less barium than the standard kind.

For now, eco-friendly fireworks are only being used by companies that put on regular displays, especially indoors, where smoke is particularly unacceptable. For most neighborhood shows, cost is still too limiting at this point. Prices won't come down, experts say, unless the EPA decides to place strict regulations on levels of toxic chemicals involved.

To have an earth-friendly Fourth of July celebration with or without fireworks, your best strategy for now is to follow the basics. Reduce, recycle, and take simple steps like drinking out of reusable water bottles instead of disposable ones. (For more everyday eco-friendly tips, visit: http://www.epa.gov/earthday/tips-all.htm)

As for enjoying those flashing lights, Hiskey said, "Be safe. Don't be downwind from fireworks. And call it good."

Related Links:

Treehugger.com: The Prettiest Pollutants

Discovery News: Earth

Animal Planet: Pets and Fireworks