Climate change is harming human health as more people suffer from heat stress, extreme weather and mosquito-borne diseases including malaria, the World Health Organization (WHO) said on Tuesday.

Axar.az reports citing Reuters that he U.N. agency, in a report, issued a day after a climate summit began in Madrid, urged governments to meet ambitious targets to reduce heat-trapping carbon emissions saying it could save a million lives a year through lower air pollution alone.

“Health is paying the price of the climate crisis. Why? Because our lungs, our brains, our cardiovascular system is very much suffering from the causes of climate change which are overlapping very much with the causes of air pollution,” Maria Neira, Director of WHO’s Department of Environment, Climate Change and Health, told a news briefing.

Yet less than 1% of international financing for climate action goes to the health sector, she said, calling it “absolutely outrageous”.