I am not a religious person, and am not in the habit of looking at religious groups for innovative approaches to global problems. But Floresta is genuinely interesting: they focus on deforestation as both a manifestation and a symbol of global poverty, using microloans, training in sustainable agriculture, and the planting of trees as a way of helping out the poor in the Dominican Republic, Haiti, and Mexico. While evangelism is part of their efforts, they emphasize on the site that participation in religious activities is not a prerequisite for their services. They've worked in nearly a hundred communities, made over 2,000 loans, and planted over two million trees. (Via Slacktivist)