The gift was the largest yet for the foundation and was among several splashy donations in recent months by Mr. Bezos, one of the world’s richest people.
The organization, still run by Bill Gates and Melinda French Gates, will eventually spend $9 billion a year, up from $6 billion, on causes like global health and education.
In a few short years, effective altruism has become the giving philosophy for many Silicon Valley programmers, hedge funders and even tech billionaires.
He said passengers killed on two 737 Max flights were crime victims, siding with relatives who objected to a deal that spared Boeing from a criminal charge.
The Amazon founder, estimated to be worth $124 billion, suggested in an
interview on CNN that he would donate most of his money to charity in his
lifetime, the first time he had made such a pledge.