Perchlorates
Apr 24th 2005nerd alert
The menace of perchlorates grows again. Now 36 states (the AP says) have detected perchlorate in their drinking water. Perchlorate is at least potentially a hazard, because it can interfere with thyroid activity in adults and children, causing problems with metabolism and normal growth. Industrially, perchlorates are used as oxidizers in rocket fuel and fireworks [...]