Some waste will eventually rot, but not all, and in the process it may smell or generate methane gas, which is explosive and contributes to the greenhouse effect. Leachate produced as waste decomposes may cause pollution. with the solution of earth token that will turn all the waste material to a renewable energy it will lessen the amount of methane gas that contributes to the greenhouse effect and also lessen landfill sites and that land can use to other purposes.