MacKenzie Scott, the ex-wife of Jeff Bezos and one of the world's richest women, has married a Seattle science teacher, who promptly declared he plans to help give away most of their wealth to charity.

Dan Jewett, a teacher at the private Lakeside School, signaled the marriage on the website for the Giving Pledge, the movement created by Bill and Melinda Gates and Warren Buffett to encourage billionaire philanthropy.

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