Many of us, including myself, live in cities. We go about our daily lives, hustling and bustling, surrounded by our modern, clean and well-maintained built environment such as shopping malls, office buildings and if you’re in Singapore, HDBs (yes HDBs), blissfully unaware of the pollution that exists around us.

You might ask, where can pollution be found in our cities? Let’s find out together!

Spoiler: It’s all around you.

— Rachel :-)