Trillions of dollars are needed to make poorer nations more resilient to climate change, and studies have estimated that every $1 invested today will save at least $4 in future. - Political jitters - But governments are limited in the amount they can borrow, he said, and reluctant to dip into their budgets for climate adaptation in poorer nations.

Trillions of dollars are needed to make poorer nations more resilient to climate change, and studies have estimated that every $1 invested today will save at least $4 in future. - Political jitters - But governments are limited in the amount they can borrow, he said, and reluctant to dip into their budgets for climate adaptation in poorer nations.