A heatwave across Europe from June 20-28 caused 3,700 excess deaths in France, Belgium, and the Netherlands, with authorities warning the numbers may rise.France recorded 2,025 deaths, Belgium 1,200, and the Netherlands 480.The extreme heat, linked to climate change, overwhelmed healthcare systems and caused infrastructure damage.

French Health Minister Stephanie Rist noted a sharp increase in deaths among people over 45, while Belgium's ministry called the mortality rate unprecedented.The crisis highlights the growing health risks from climate-related events.