One of America’s two remaining stand-alone book sections, the Washington Post’s Book World, may be a goner. Editor Marie Arana left last year in a buy-out and has yet to be replaced, and now, according to a report on Politico by Michael Calderone, “As the Post restructures under executive editor Marcus Brauchli, it’s possible that Sunday’s Book World supplement could be shuttered in the process.” In fact, says Calderone, “High-level discussions about ending Book World have indeed taken place, according to a Post source with knowledge of the talks.” That would leave the New York Times Sunday Book Review as the sole remaining stand-alone.