announcer: "earth focus" is made possible in part by a grant from anne ray foundation, a margaret a. argill philanthropy; the orange county community foundation; and the farvue foundation. [helicopter blades whirring] [flames crackling] [water rushing] [wind howling] man: every child born today will experience a fundamentally altered world, which will increase their probality of death and serious disease or illness because of the change in the climate. there are a great many efforts brought by young people around the world--cases brought domestically against governments for iling to do what those governments pledged to do in the paris agreement. but what forum would allow you to talk to all of humanity at one time? that's the united nations. we conducted interviews to basically put together the best diversity and array of young people from different parts of the world being affected in different wa by the crisis. a number of organizations, including greta thunberg, conveyed to us the desire to formulate, if possible, a single legal strategy in order to respond to a challenge that afft

announcer: "earth focus" is made possible in part by a grant from anne ray foundation--a margaret a. cargill philanthropy-- the orange county community foundation, and the farvue foundation. [distant rumbling] man: and we've got 17 coal fields in south africa, and more than half of them are bunched together on mpumalanga highveld. it's called the central basin. in our research, we have spoken to many people. i think this is really bad on the ground. it's really, really bad. woman: there are two mines here. that one is the old mine. if you can see the dust that is coming out when they are blasting, you can even smell it. even if you wipe yourself like this, you-- there's a black dust in your hand. so what about if you inhale it? [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.

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