PepsiCo on Monday announced that it will launch a prebiotic cola under its namesake soda brand, starting this fall.Pepsi Prebiotic Cola comes just four months after the beverage giant announced its $1.95 billion acquisition of upstart Poppi. Soda consumption has broadly fallen over the past two decades in the U.S. But prebiotic sodas, fueled by Poppi and fellow newcomer Olipop, have won over health-conscious consumers over the past five years with their gut-health claims. The acquisition closed in May.Prior ...