We hear a lot in the news these days: “Recycle newspapers and save a tree.” To promote recycling, three essential keys are needed. They are a more informed public, the development of improved technology, and a greater demand for recycled materials. Let’s use paper as an example. The first step is to raise public awareness about the recycling process, to explain the kinds of materials that can be recycled, and provide ways on how to properly dispose them. Local governments should educate the public on how to properly sort reusable materials from those that can’t be recycled very easily. Then, a system of collecting these sorted materials needs to be established. Second, technological progress has been made by many parties, but governmental agencies need to put forward more policies to support those companies involved in recycling, for example, by giving them low-cost loans, or even grants to upgrade equipment and to encourage further research. The final key is to increase commercial enterprises’ interest in using recycled materials. In those heavily populated regions where the technology to process the used materials lags far behind the amount being collected for recycling, the success of this key can be quite worthwhile. If more companies in developing world can have higher demand for recycled goods, the amount of trash can be dramatically reduced.