In addition to being a professor, Linnér is also a climate policy researcher and has been present during the UN's annual climate conference for many years. This year, thousands of visitors are expected, ranging from climate activists to scientists and politicians. Greta Thunberg, the teenager from Sweden who has become the symbol of the new global climate movement, will also be in place. And Linnér emphasizes Thunberg's importance for the climate issue.

- Everyone refers to the youth movement that is going on now and which Greta stands for as a symbol. It shows a great power. Now something really is happening with our consciousness.

More about the climate in the clip above.