the smoke is a necessary evil for the people of dharavi. world, pollution has been the price india is paying for a booming economy. the smog that gives mumbai its spectacular sunsets has also made it the fifth most polluted mega city in the world. and when the sun disappears before it hits the horizon, you can well believe it. in november, 2016, the indian government declared the air pollution in delhi a national emergency, with harmful pollutants more than 16 times the safe limit. and it's notjust caused by all that traffic. so, where does it come from? i was surprised to find out a lot of it comes from diesel generators. see, the electricity in india isn't very reliable, but there are plenty of businesses that need guaranteed power, so they have their own individual generators that fire up whenever the electricity goes down and that means there are loads of exhaust pipes like this all over the city, which regularly belch out all kinds of unpleasant stuff. when you start looking for them, they're everywhere. even the mobile masts have back

the smoke is a necessary evil for the people of dharavi.nd when the sun disappears before it hits the horizon, you can well believe it. in november, 2016, the indian government declared the air pollution in delhi a national emergency, with harmful pollutants more than 16 times the safe limit. and it's notjust caused by all that traffic. so, where does it come from? i was surprised to find out a lot of it comes from diesel generators. see, the electricity in india isn't very reliable, but there are plenty of businesses that need guaranteed power, so they have their own individual generators that fire up whenever the electricity goes down and that means there are loads of exhaust pipes like this all over the city, which regularly belch out all kinds of unpleasant stuff. hello. here in bangalore, we've come across a small project to capture the soot and turn it into art. so what we have built is a retrofit device that attaches to the exhaust pipe of the chimneys. this device can be attached to practically any exhaust pipe, irrespective of what