Press Association: Thousands could die from a serious heatwave as a result of climate change, a report from the Department of Health has warned. By 2012 there is a one in 40 chance – described by the report as a high risk – that the South East will have experienced a severe heatwave which would cause more than 3,000 immediate deaths. A nine-day heatwave, with temperatures averaging 27C, could cause 6,353 heat-related deaths throughout the year in 2012, the report said. And the study of the …