M&M’s maker Mars is buying Kellanova, the maker of Cheez-Its and Pop-Tarts, for nearly $30 billion, vastly expanding the number of household-name brands under one roof. Kellanova was created last year when the Kellogg Co. split into two companies. Kellanova sells many of the former company’s most profitable brands, including Pringles, Eggo, Town House, MorningStar […]