In a recent post we noted that fireworks "are often propelled by gunpowder, and the accelerants and heavy metals used for coloration can leave traces in the air and water for days or even weeks after the party is over." and "fireworks heavily contribute to perchlorate contamination of surrounding water bodies." The commenters suggested that we "Lighten up, killjoys - it's just once a year" and "'Greens' are always accused of wanting to go back to the dark ages" In an earlier post Jilted said "Once again treehuggers show how incredibly boring they are." Matthew has noted that some companies are trying to make greener fireworks. Is that another option?