carl: oliver sallet, thank you.eiko maas has made that his priority, but at home the government is struggling to keep up with its own schedule to phase out coal. it is controversial because some regions have a relied -- relied on it for decades. the bundestag spent days of wrestling with this and campaigners came to pile on the pressure. >> school can wait for lucas today. he and his classmates have joined this student demonstration in berlin to protest climate change. >> what do we want? nolan >> there is not a lack of knowledge but of action. that is why it is good to go in the streets and express our views, but we will see what comes out of it. reporter: these young students are demanding action from those sitting in the building across the street. the german core commission, a group of experts that advises the german government how to end coal production. the minister said this is more than climate change. >> if we act smart, there will be no losers. there will only be winners. we will be supporting those region