U.N. Secretary General Antonio Guterres called on Thursday for countries to address the urgency of the extreme heat epidemic, fueled by climate change - days after the world registered its hottest day on record, Paralel.Az reports citing Reuters.

"Extreme heat is the new abnormal," Guterres said. "The world must rise to the challenge of rising temperatures," he said.

Climate change is making heatwaves more frequent, more intense and longer lasting across the world.