From Spain to Poland, authorities have issued heat alerts as scorching temperatures grip large parts of the continent. Health warnings and infrastructure strainThe extreme heat has strained public health systems and energy supplies. France, Spain and other countries have issued public health warnings, advising people to stay hydrated and avoid outdoor activity during peak hours. The heatwave has also raised fears of drought and wildfires, particularly in southern Europe, where rainfall has been below average. Authorities across the continent are urging residents to take precautions as the early summer continues to deliver extreme temperatures.