Some family farmers store animal droppings in containers and capture natural gas from the droppings for fuel. What is the fuel called?

The fuel derived from animal droppings is called biogas. It is primarily composed of methane and carbon dioxide and can be captured through anaerobic digestion, a process where microorganisms break down organic matter in the absence of oxygen. Biogas can be used for heating, electricity generation, or as a vehicle fuel, providing a renewable energy source while also managing waste.