Puxin Biogas is a type of energy that people can make in their homes. It works by taking organic waste such as food scraps, animal waste, and yard waste, and putting them in a special container called a biogas digester. Inside this container, bacteria eat and break down the waste, and release a gas called methane which is used as energy. This energy can then be used to heat and light up homes, cook food, and even run machines in some cases.