Jeff Bezos plans to give away most of his $124bn (£110bn) fortune, he has told CNN.
The Amazon founder, 58, is the world’s second-richest man after Elon Musk, the Tesla boss and new owner of Twitter, according to Forbes.
This is the first time he has said he plans to give away most of his money.
Mr Bezos has been criticised in the past for not signing the Giving Pledge, a campaign founded by Warren Buffett and Bill Gates to encourage the mega rich to contribute most of their wealth to charity.
Asked directly by CNN whether he planned to give most of his money away, Mr Bezos said: “Yeah, I do.”
He said the money would go to causes that work to tackle climate change and to support people who can unify humanity.