This paper shows that the Soy Moratorium has dramatically reduced the amount of deforestation linked to soy production in the Brazilian Amazon, protecting valuable rainforest and the wildlife that live there.
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Gibbs, H.K., L. Rausch, J. Munger, I. Schelly, D. C. Morton, P. Noojipady, B. Soares-Filho, P. Barreto, L. Micol, and N.F. Walker. 2015. Brazil’s Soy Moratorium: Supply chain governance is needed to avoid deforestation. Science.