U.S. markets close in 1 hour 43 minutes

Researcher explains how e-cigarette smoke is linked to lung cancer in mice

The CDC says the total cases of vaping-related illnesses rose to nearly 1,300 incidents, and at least 26 confirmed deaths. Yahoo Finance's Zack Guzman & Julia La Roche, along with CapitalistBook.com author Nathan Latka discuss with NYU School of Medicine's Moon-Shong Tang.