People stand in line to enter the Supreme Court, Wednesday, March 28, 2018, in Washington, where the court will hear arguments on a gerrymandering case. The Supreme Court is taking up its second big partisan redistricting case of the term amid signs the justices could place limits on drawing maps for political gain. (AP Photo/Jacquelyn Martin)
Shankar Vedantam is the host and creator of Hidden Brain. The Hidden Brain podcast receives more than three million downloads per week. The Hidden Brain radio show is distributed by NPR and featured on nearly 400 public radio stations around the United States.