Wood gas is a type of fuel gas produced by the gasification of organic materials, primarily wood. This process involves heating the wood in a low-oxygen environment, which breaks it down into combustible gases, including carbon monoxide, hydrogen, and methane. These gases can be used as a renewable energy source for heating, cooking, or powering engines. The use of wood gas dates back to the early 20th century, especially during times of fuel shortages. Today, it is gaining attention as a sustainable alternative to fossil fuels, contributing to efforts in reducing greenhouse gas emissions and promoting energy independence through the use of biomass resources like wood and agricultural waste.