Much of our environmental focus in recent years has been on climate change, and as a result urban pollution has taken a bit of a back seat. But as the world’s population grows there are more people living from the land, more cars on the road and bigger industries making more products, meaning pollution is getting worse. In some areas it’s reaching levels that are having a major impact on our health. Casey speaks with a leading researcher in urban pollution from one of the biggest cities in the world to find out what the latest evidence is showing, and unfortunately it’s not good news, even for those not living in the big smoke.

Tonic TV | T-S107 | S02E04