Walmart Cut 230 Million Tons of Emissions, With Supplier Help

Walmart Inc. has cut 230 million metric tons of greenhouse gases out of its supply chain in the past three years, putting the world’s largest retailer on track to achieve its 2030 emissions goal.

The company, which aims to reduce its cumulative carbon footprint by a billion tons by the end of the decade, says it’s trying to think more systemically about the impact it is having on people and the planet. Tackling that means compelling suppliers to rethink their operations, since about 95% of Walmart’s emissions stem from its supply chain.

“Ultimately we want to transform the underlying systems ...