when we heal the earth, we heal ourselves. david orr

Alicia on The Mike Nowak Show

Chicago horticulture expert Mike Nowak invited me on his radio show to discuss Earth Hour. LISTEN HERE. I'm about 3/4 of the way into the recording.

Wednesday, July 1, 2009

Have an Eco 4th of July




Chicago sounds like a war zone during the 4th of July. With thousands of fireworks going off all over the city in just a few hours, it's easy to imagine the toxic consequences of our "patriotism." If you're planning to set off a few sparklers this year, heed these tips to mitigate your damage to mother nature:


1. PICK UP YOUR TRASH

2. Don't set off fireworks near dry brush.

3. Keep a bucket of water around to quickly douse any small fires.

4. Leave the big ones to professionals. Avoid setting off fireworks with projectiles. You never know where those hot embers will land. Plus, more contained fireworks are easier to clean up.

5. Just use common sense.

That's all I can think of right now. If YOU have a tip, please leave a comment below!

FROM THE AMERICAN CHEMICAL SOCIETY:

'Green' fireworks may brighten eco-friendly 4th of July displays in the future.

WASHINGTON, D.C., June 23, 2009 — With millions of people in the United States eagerly awaiting those July 4 fireworks displays — and our Canadian neighbors doing likewise for their July 1 Canada Day celebrations — here's a prospect for those light shows of the future likely to ignite a smile on Mother Nature's face: A new generation of "green" fireworks is quietly making its way toward the sky.

That's "green" as in environmentally friendly.

Fireworks, flares and other so-called "pyrotechnics" traditionally have included potassium perchlorate as the oxidizer, a material that provides the oxygen that fireworks need to burn. Perchlorate, however, is an environmental pollutant with potential adverse effects on people and wildlife. Pyrotechnics contain other ingredients, such color-producing heavy metals, with a similar potential.

Studies have shown that perchlorate from community fireworks displays conducted over lakes, for instance, can lead to perchlorate contamination of the water. For full details about how perchlorate contaminates lakes after fireworks displays, Click here for a study published in the American Chemical Society's peer-reviewed journal, Environmental Science & Technology.

Researchers, however, have developed new pyrotechnic formulas that replace perchlorate with nitrogen-rich materials or nitrocellulose that burn cleaner and produce less smoke, according to an article in ACS's weekly newsmagazine, Chemical & Engineering News (C&EN). To read it, click on click on fireworks.

In the article, C&EN Associate Editor Bethany Halford says these nitrogen-rich formulas also use fewer color-producing chemicals, dramatically cutting down on the amount of heavy metals used and lowering their potentially toxic effects.

Some of these fireworks have already been used at circuses, rock concerts and other events, but none have been used at large outdoor displays. The problem: cost. The big challenge in launching these "eco-friendly" pyrotechnics into the sky is making them cost-competitive with conventional fireworks while maintaining their dazzle and glow, the article explains.

The article notes that fireworks manufacturers have little incentive to further develop the new green fireworks because no federal regulations currently limit releases of perchlorate from pyrotechnics.

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The American Chemical Society is a nonprofit organization chartered by the U.S. Congress. With more than 154,000 members, ACS is the world's largest scientific society and a global leader in providing access to chemistry-related research through its multiple databases, peer-reviewed journals and scientific conferences. Its main offices are in Washington, D.C., and Columbus, Ohio. n

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