July 9 (UPI) -- Heat-related deaths in Europe's latest heat wave that ended last week were three times higher than they would have been without the warming of the planet caused by man-made climate change, British scientists said Wednesday. Climate-warming caused by burning fossil fuels, including oil, gas and coal, made the heatwave much hotter, boosting heat deaths from about 800 to an estimated 2,300 across 12 European cities, according to a new research study published by Imperial College