Kenyan-born runner Lornah Kiplagat and American Collen De Reuck are two of the favorites competing in the upcoming New York Road Runner’s "Circle of Friends Mini 10K." They stop by with a look at the state of female distance runners. Then, German film star Hanna Schygulla discusses her current film retrospective at MoMA. Next, Esther Cohen tells us about her new novel, Book Doctor. And in our regular Please Explain feature, we ask two doctors to help us navigate the sea of vitamins, herbs, and minerals available as dietary supplements.