Deforestation is occurring most rapidly in tropical regions of the world. Most forests in other climatic areas have already been affected by human beings. They have been destroyed or preserved or systematically cut and replanted. There are two reasons why jungles are now in danger. One is the mechanization of the logging industry. The second is the world’s hunger for forest products. These jungles are the world’s largest and last reserved of timber. Because the world needs the wood that these forests supply, they will probably be cut. Scientists, however, want to convince countries with large stands of tropical trees to manage their forests so that they will continue to produce.