Summary: Creating superheroes. Kurt Andersen talks with “Superman” writer Gene Luen Yang on “Boxers & Saints” and “American Born Chinese.” Plus, the complicated — and sometimes divisive — issue of cosplay characters dressing up as a character of a different race. And producers Brendan Baker and Chloe Prasinos talk about all the work and (and a 3-D recording gizmo) that went into making their new podcast, Marvel’s “Wolverine: The Long Night.”
