Speaking from Vienna, he told The Independent that the world must “listen to the warnings from nature”.
“Let me just tell you one story which I heard from Pope Francis three years ago,” Mr Ban said.
“He said that God always forgives. Human beings sometimes forgive. But nature never forgives. What inspiring words. We have to live harmoniously with our nature.
“This is a warning. So we have to listen very carefully and work together.”
Click here to sign up for our newsletters.