From the archive record
Delhi is among the most polluted cities in the world, and with 17 million inhabitants, is also the fifth most populated. A report by the WHO (World Health Organization) stated the air in the capital city has a high presence of PM10 (particulate matter). PM10 in Delhi's air is around 292 micrograms per cubic metre, as against the safe limit of 60 micrograms per cubic metre set by WHO, making breathing in Delhi equal to smoking 44 cigarettes a day. To combat the worsening air quality, National Environmental Engineering Research Institute (NEERI), the Nagpur-based laboratory of the Council of Scientific and Industrial Research (CSIR), has developed the WAYU (Wind Augmentation and Purification Units) device. This device, designed in collaboration with the Industrial Design Centre at IIT Bombay