"If you fail, we will never forgive you!" Angrily, the generation of young climate rebels appeals to adult reason and makes 2019 the year of their protest. The reason: our future is threatened by global warming. Greta Thunberg has risen to become the leading figure of the worldwide movement that has shaken up the general public. Their influence is growing rapidly. Finally, governments are starting to pay attention. They all have their goals clearly in mind. Because whatever must happen: it must happen now!