Grocery story giants Kroger and Albertsons want to become one mega-company. The chains say merging will allow them to lower their prices, but antitrust researcher Ron Knox says we should be skeptical. This episode was produced by Victoria Chamberlin, edited by Matt Collette, fact-checked by Laura Bullard, engineered by Paul Robert Mounsey, and hosted by Noel King. Transcript at vox.com/todayexplained   Support Today, Explained by making a financial contribution to Vox! bit.ly/givepodcasts Learn more about your ad choices. Visit podcastchoices.com/adchoices