A new series from the National Academy of Sciences explores the broad role of how social science research can benefit society. This episode profiles a man named Fielding Daniel and his wife, Amy, who were told to wait years so that Daniel could get a kidney. This led them to Harvard-based market economist Alvin Roth, whose research and redesign of the kidney marketplace saved countless lives. Roth pinpointed the main problem: There were lots of people who wanted to give kidneys but couldn’t because their loved ones weren’t a match. “As an economist that’s not the way an orderly market works,” he explains in this short film. “So, I got together with some colleagues and said let’s think how we would trade kidneys.” This short film premiered on the Atlantic’s website in November 2016. Video by Redglass Pictures. Music by Ryan Whittier.