at the academy, thererere scientists giving presentatioio, sometimes i'm giving presentations. my presentation is about climate justice. client justice means that every person in the world is allowed to pollute the air with two tons of c carbon. now as of today, in the u.s. america pollutes the air with 20 tons of carbon a year, an average german or european, 10 ons of carbrbon a year. and africa, a half a ton. today, i'm working together with thousands of other students in germany and many other countries to plant one million trees in ach country. we're learning about different kinds of trees. >> we're here in the forest and we're planting some trees to help climate change. > we have already planted 29 0,000 trees in germany. anand 550,000 trees are already pledged. there are adults and politicians that changeded how to talk and really understood what i talked about. >> he knows that children can do something. they can change a lot. and they can make a difference. [applause] >> if the adults don't do enough, we have to do it because we will liveve on earth f for anothehe80 or