By Eugenia LOGIURATTO Eight South American countries agreed Tuesday to launch an alliance to fight deforestation in the Amazon, vowing at a summit in Brazil to stop the world’s biggest rainforest from reaching “a point of no return.” The closely watched summit of the Amazon Cooperation Treaty Organization (ACTO) adopted what host country Brazil called a “new and ambitious shared agenda” to save the rainforest, a crucial buffer against climate change that experts warn is […]