A new Greenpeace report shows 22 out of the world’s 30 most air-polluted cities are in India. The environmental NGO analysed real-time air pollution readings from over 3,000 cities in 2018. A staggering 64 per cent exceeded the World Health Organisation’s guideline for annual exposure to fine particulate matter, or PM2.5. Relying heavily on coal as an energy source, and coping with serious traffic congestion, cities in India, China, Pakistan and Bangladesh were among the top 50 with the…