The online retailer that's run by the world's richest man was criticized earlier this year after revealing its workers' median pay was $28,446.
William Rainford, a dean of the university's National Catholic School of Social Service, apologized for a tweet that the university says "demonstrated a lack of sensitivity."
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The Royal Swedish Academy of Sciences says American Arthur Ashkin has won half the prize, while Gérard Mourou of France and Donna Strickland of Canada, the third female winner ever, share the rest.
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