Christian Science Monitor: Once seen as one of the biggest threats to the Amazon rainforest, large meatpacking companies can become important players in slowing the rate of deforestation. Preserving tropical forests, which store enormous amounts of carbon, is widely seen as vital to combating global warming and maintaining the planet's biodiversity. One way to accomplish that is to get companies to pledge to buy their raw materials or agricultural products from sources that don't contribute to deforestation. But relatively...