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Air Quality  A school boy cycles through hazy conditions - BB Yadav, DNA As Delhi continues to choke on rapidly deteriorating air quality, a new study has found that three of the world's largest nitrogen dioxide (NO2) emission hotspots that contribute to formation of finer particulate matter causing air pollution are in India, with one in the Delhi-NCR. The study by Greenpeace comes as Delhi's pollution level climbed to severe with an AQI of 401 on Tuesday as a thick haze engulfed the city on Tuesday. NO2 is a dangerous pollutant in itself and also contributes to the formation of PM2.5 and ozone, two of the most dangerous air pollutants. The largest number of hotspots, a total of 10, is found in China, eight in the Arab world, four in the EU and three each in India, the US and the DR Congo, according to an analysis of new satellite data from June 1 to August 31. Delhi-NCR, Sonbhadra in Uttar Pradesh and Singrauli in Madhya Pradesh and Talcher-Angul in Odis...

Photos:   13 Halloween health hazards 7. Falling down on the job  –  In addition to tripping, falling off a ladder or other height ties for secnd most common injury during Halloween, says the US Consumer Product Safety Commission. Most occur while putting up or taking down Halloween decorations, most likely because of poor ladder safety skills. Hide Caption 8 of 14 Photos:   13 Halloween health hazards 6. Trick or trip  –  Tripping or falling ties for second place prize for most common Halloween injury, says the US Consumer Product Safety Commission. Getting tangled in the long legs of ill-fitting costumes is a key reason; costume masks can also be part of the problem. Be sure whatever you wear or put on your kids will allow full range of eyesight and has been altered to prevent tripping before you head out the door. Hide Caption 9 of 14 P...