UN chief Antonio Guterres said the world was still on the precipice of "catastrophe" after nations reached a global climate deal Saturday that fell short of what science says is needed to contain dangerous warming.
"Our fragile planet is hanging by a thread," Guterres said in a statement that welcomed progress at the Glasgow summit, while stressing it was "not enough".
"We are still knocking on the door of climate catastrophe," he added.
