Climate change is severely impacting people's health around the world, a report by a leading medical publication has found.
The Lancet Countdown report says the world's continued reliance on fossil fuels increases the risk of food insecurity, infectious disease and heat-related illness.
UN Secretary General António Guterres responded that global leaders must match action to the size of the problem.
Leaders will meet for the major climate conference COP27 in Egypt next month.