The weird natural 'cooling systems' around Europe keeping temperatures low during the heatwave - from ancient aqueducts to cave villages

During Europe's intense heatwaves, some towns are surprisingly cool thanks to ancient natural "cooling systems." From aqueducts that channel cool water through cities to villages built inside caves, these age-old strategies are keeping temperatures low. This isn't just about staying cool—it's also a nod to sustainable, eco-friendly solutions that offer lessons for modern urban planning. As climate change intensifies, these traditional methods highlight how we can draw on history for innovative ways to combat rising temperatures.