The push will bring new techniques to sequester carbon to nearly all of the company’s agricultural footprint. In a year, PepsiCo buys around 4 billion pounds of potatoes to make potato chips. It’s one piece of the massive web of farms that supply the company, which the company wants to use to help make an equally massive change: By the end of the decade, it now plans to work with the tens of thousands of farmers in its supply chain to spread regenerative agriculture—practices that can help improve sustainability—across 7 million acres, or roughly its entire agricultural footprint.