Global economic growth could plummet by 50% between 2070 and 2090 from the catastrophic shocks of climate change unless immediate action by political leaders is taken to decarbonise and restore nature, according to a new report. The stark warning from risk management experts the Institute and Faculty of Actuaries (IFoA) hugely increases the estimate of risk to global economic wellbeing from climate change impacts such as fires, flooding, droughts, temperature rises and nature breakdown. In a report with scientists at the University of Exeter, published on Thursday, the IFoA, which uses maths and statistics to analyse financial risk for businesses