Brazil Cattle (IMAGE) University of Wisconsin-Madison Caption Historically, expansion of cattle pastures has driven deforestation in the Brazilian Amazon, where these pastures cover about two-thirds of all the deforested land. A new study led by the University of Wisconsin-Madison's Holly Gibbs shows that market-driven "zero deforestation agreements" have dramatically influenced the behavior of ranchers and the slaughterhouses to which they sell. Credit Rachel Kramer, National Wildlife Federation Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.