In early July 2025, Europe was struck by an intense heatwave with dramatic consequences. The main feature of this wave was so-called 'tropical nights'—when night temperatures do not fall below 20 °C, preventing the body from recovering from daytime overheating. This climate event became the focus of a new study published on July 9, 2025, in which scientists directly linked the anomaly to climate change and anthropogenic emissions. The heatwave, recorded from June 23 to July 2, severely affected cities in Southern and Western Europe: Barcelona, Milan, Paris, Rome, and Madrid experienced extreme temperatures both day and night. According to data from World Weather Attribution, over 2,300 people died from the abnormal heat. Of those, approximately 1,500 deaths were directly attributed to global warming caused by fossil fuel combustion. Scientific data show that this heatwave would have been nearly impossible without climate change: its occurrence would have been 10 times less likely without human influence. Particularly dangerous were night temperatures in some areas not dropping below 26–27 °C. This condition prevented bodily rest, worsened chronic diseases, and increased mortality among the elderly and vulnerable groups. Mediterranean sea surface temperatures also broke records, exceeding norms by 3.7 °C in some regions. This caused mass marine deaths and increased air humidity, making 'tropical nights' even more dangerous. The situation was worsened by poor infrastructure preparedness in European cities. Lack of greenery, air conditioning in homes, and high population density all heightened health risks during night heat. These events sparked climate protests. On July 9, over 5,000 people gathered at the UK parliament demanding immediate emissions legislation. Meanwhile, governments in France, Spain, and Italy are discussing healthcare system modernization and national adaptation programs. Thus, 'tropical nights' in Europe are not just a climate anomaly but a warning signal. They confirm that the climate crisis has arrived and requires systemic action—from phasing out hydrocarbons to massive urban reconstruction. Sources: https://www.theguardian.com/environment/2025/jul/09/europe-june-heatwave-study-climate-breakdown-tripled-death-toll; https://apnews.com/article/08421987a1ff7e0de4aac7278a41da21; https://en.wikipedia.org/wiki/2025_European_and_Mediterranean_wildfires; https://www.theguardian.com/environment/2025/jul/09/thousands-meet-their-mps-to-show-huge-demand-for-climate-action.