This week host Steven Strogatz speaks with two scientists whose searches for truth landed them squarely on the front lines of controversy. Rebecca Goldin, a professor of mathematical sciences at George Mason University, infuriated much of the public by making a statistically sound but unpopular argument about the safety benefits of breastfeeding. Brian Nosek, a professor of psychology at the University of Virginia, revealed that many cherished findings in his field couldn't be scientifically replicated. This episode was produced by Camille Petersen. Read more at QuantaMagazine.org. Production and original music by Story Mechanics.