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Air pollution is becoming a bigger and bigger issue in our lives. According to the World Health Organisation global air pollution database, India has 14 out of the 15 most polluted cities in the world in terms of PM 2.5 concentrations. But staying indoors will not help as indoor air is just as toxic as outside air. Today on Talking Books, Ameya Nagarajan talks to Barun Aggarwal, air pollution expert and founder and CEO of Breathe Easy, about the gravity of India's air pollution problem, what we can do to fight it and how bleak our future will be if we do nothing about it. You can buy the book Barun co-wrote here: https://amzn.to/2zbq96P You can follow us and leave us feedback on Facebook and Twitter @expresspodcasts, or send us an email at podcasts@indianexpress.com. If you like this show, please subscribe and leave us a review on Apple Podcasts so other people can find us. You can also find us on www.indianexpress.com/audio.