Bill Whitaker reports on a new gene editing tool -- that is revolutionizing biomedical research. For nearly 20-years -- Bill and Melinda Gates have sent 20-thousand disadvantaged students to college. Scott Pelley talks to some of the students who benefited from the Gates Millennium Scholarship. Lesley Stahl reports on a new type of farming -- with seaweed. Those stories on tonight's "60 Minutes." Learn more about your ad choices. Visit megaphone.fm/adchoices

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