[distant chatter] [child's congested coughing] woman: i moved to mpumalanga highveld for better future. i've worked in the mines, and i was affected with sinus while i was working there. in 2013, i got my firstborn. [coughing continues] woman: so he gets sick, is struggling to breathe. he was admitted at the hospital. they diagnosed him with bronchitis asthma. i visited one doctor and asked why, so he told me, "the area that you are living in is too dirty, so most of the kids are affected witasthma because they're inhaling dirty air." 2015, i get my second-born. 6 months down the line, she was admitted at the hospital, having the very same signs. they sometimes struggle to breathe and they struggle to speak. sometimes they don't breathe at all. you can even see that she or he's gone. munnick: we know from international studies that a range of about two kilometers around each power station, the soil is enriched in heavy metals that come out of the coal. there's sizable pollution, and for a long time, i know, you know, since the late eighties, i think 've known that we were equal to what