Dr. Elizabeth Yuko is a bioethicist and adjunct professor of ethics at Fordham University. She has written for The New York Times, The Washington Post, The Atlantic, Rolling Stone, CNN & Playboy.

Every time you take a trip, your luggage may pass through many hands, including those of the airline crew, a taxi or bus driver, the hotel bellhop, or a tour operator. “Think about all the places ...

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