Indians have reacted to US president Donald Trump describing the air in India, China and Russia as “filthy” during the final election debate. His remarks drew both anger and introspection, with some Indians asking Prime Minister Narendra Modi to take notice. Others agreed that capital Delhi’s air was among the most foul in the world. In recent weeks, the city’s air quality has turned “severe”, with residents complaining of breathing difficulties. India’s dreaded pollution season has returned as levels of PM2.5 – dangerous tiny pollutants in the air – in the capital have averaged around 180-300 micrograms per cubic metre in recent weeks, 12 times higher than the WHO’s safe limits.(BBC)…[+]