When a company sets a goal to reach zero emissions within decades, it has to start cutting carbon on every possible front.

Years of research and evidence point to a convergence on a few central tenets.

The deal is Amazon’s biggest commitment to date to cut the carbon footprint of its delivery operations in Europe.

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.

Europe’s plan to put a price on dirtier imports risks getting caught up in global trade tensions as the fallout from the pandemic eclipses climate change as the biggest challenge for governments.

Elon Musk promises a “giant contract” with the miner that can supply nickel for Tesla Inc. batteries at low cost with minimal environmental impact, yet the industry’s messy track record may make that deal difficult to clinch.

The Golden State is going to need a lot more batteries to weather the next climate-driven crisis — let alone to achieve its goal of a carbon-free grid.

Unilever is planning to use new geo-location technology to make its palm oil supply chains more transparent and tackle a farm-to-table traceability problem that has plagued the industry for decades.

The pandemic has cut greenhouse gases in some key ways, as people are flying and driving less. But food waste accounts for one reason why the drops likely won’t fall as low as hoped.