Pollution can take many forms.
Air, water, solid waste - most agree that pollution is harmful for people and other life on Earth. But more controversial is how to best prevent it - and clean it up.
A breath of fresh air...is hard to come by in New Delhi. The World Health Organisation report describing Delhi as the world's dirtiest city in 2013. Fast forward to the present, and the toxic haze has only gotten worse causing chronic respiratory problems to its residents. But businesses around buffers against the smog - like face masks and air purifiers are seeing a boom.
Navajo Native Americans live across several states in southwest United States. Their territory was once a centre of uranium mining, but that came to an end come 30 years ago. Today, with more than 500 abandoned mines scattered across the countryside, the legacy of uranium remains.
Navajos battle uranium pollution in the United States, a Peruvian farmer sues a German energy giant for climate change, Kenyan fishermen face industrial competition from abroad, and South Korea's traditional divers could soon be a thing of the past.