Japanese companies are turning to AI and other advanced tech to sustainably reduce food waste and cut costs. The country, which has the highest food waste per capita in Asia, has introduced a new law to halve such costs from 2000 levels by 2030, pushing companies to find solutions. Convenience store chain Lawson has started using an AI from U.S. firm DataRobot, to estimate the amount of product on shelves that might go unsold or fall short of demand.