Following episode 3, we now explore the first signs of the healing of the ozone hole as well as emerging issues such as new sources of chlorofluorocarbons (CFCs). We will learn a bit more about how the ozone hole impacts climate conditions in the southern hemisphere and the relationship between global warming and ozone depletion. Will the ozone hole recover by 2050? What would have happened to the ozone layer without the Montreal Protocol? Listen to the episode to know the main outcomes of the 2018 ozone assessment report!