Berlin is experiencing a significant outbreak of pine processionary caterpillars, whose venomous hairs cause skin irritation and respiratory problems. Residents have reported itchy rashes and breathing difficulties, leading some to limit outdoor activities. The caterpillars belong to the *Thaumetopoea processionea* moth species, which is expanding its range northward due to climate change. While the issue has been present in Berlin for several years, officials state the current infestation is unprecedented. Local politicians acknowledge the situation has escalated beyond control this year. Authorities are monitoring the spread and advising the public to avoid contact with the caterpillars and their nests.