This lecture delves into the relationship between weather events and climate change, exploring the definition and impact of non-stationary phenomena. The instructor discusses the merging of observations to describe this relationship, emphasizing the human influence on mean temperature and extreme events. Through historical context and scientific models, the lecture addresses the challenges of attributing specific weather events to climate change drivers. It also covers the complexities of liability for climate change and the use of Generalized Extreme Value distributions. The lecture concludes by proposing statistical approaches to assess the influence of human-induced climate change on the frequency and intensity of weather events.