
Walmart has promised big cuts in emissions of greenhouse gases. To meet that goal, though, the giant retailer may have to persuade farmers to use less fertilizer. It won’t be easy.
(Image credit: TheBusman/Getty Images)
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It is never too late to start

Walmart has promised big cuts in emissions of greenhouse gases. To meet that goal, though, the giant retailer may have to persuade farmers to use less fertilizer. It won’t be easy.
(Image credit: TheBusman/Getty Images)
…

Walmart has promised big cuts in emissions of greenhouse gases. To meet that goal, though, the giant retailer may have to persuade farmers to use less fertilizer. It won’t be easy.
(Image credit: TheBusman/Getty Images)
…