By Sarah Brown Soy cultivation and cattle ranching are two of the biggest drivers of deforestation in the Brazilian Amazon. But instead of clearing more forest area for farmland, what if soy was grown on unused pastureland? That’s what a recently published study sought to model. It found that deforestation could be eliminated and carbon emissions slashed if Brazil intensified its agricultural sector this way — a win-win for both the economy and the rainforest. The study, published in Nature Sustainability, found that intensifying crop and livestock systems would stop soybean production expandi…