Indian roadside refuse fires produce toxic rainbow

(Duke University) Samples of smoke particles emanating from burning roadside trash piles in India have shown that their chemical composition and toxicity are very bad for human health. A person standing next to one of these fires might inhale a dose of toxins 1,000 times greater than that found in the ambient air -- reaching getting a daily dose limit in just one minute. Variation found between sites offers insights on mitigating the worst effects.