Bizarre sightings of people popping in and out of New York's vast subterranean sewer system has the whole city wondering what exactly is going on. https://apnews.com/article/nyc-sewer-explorers-manhole-investigation-a229be36b3daa74223ad0a43bfdcc488?taid=6a205d9c95609a0001f5ba9b&utm_campaign=TrueAnthem&utm_medium=AP&utm_source=Voante