Equal Pay Day 2018 is Tuesday, April 10. It's the day we reflect on the gap between men and women's salaries. The pay gap is still present and significant, and conversations about how to close the gap are now front and center nationwide. So what is the overall economic impact of this ongoing inequity? And are there ways for individual companies and government to work toward equality for women? Guests: Rosanna Hertz, professor at Wellesley College; Megan Costello, executive director of the Boston Mayor's Office of Women's Advancement; and Rickey Gard Diamond, author of "Screwnomics: How Our Economy Works Against Women and Real Ways to Make Lasting Change.” In this week's Lagniappe segment: It's our April book-club pick! "An American Marriage" by Tayari Jones follows the journey of newlyweds Roy and Celestial as their life together is rocked by a false accusation, which leads to incarceration. It was named an Oprah's Book Club pick. Guest: Tayari Jones. More UTR: news.wgbh.org/UTR Follow Callie on Twitter: @CallieCrossley Like UTR on Facebook: facebook.com/UndertheRadarWGBH