World’s first biogas train makes maiden voyage in Sweden

The world’s first train to run on biogas, a renewable energy source made up of organic waste, made its maiden voyage in Sweden, a country that has high hopes for biofuels.

Biogas is made up of shredded plant materials and animal waste, which are then mixed with water in a tank. Once the waste has decomposed, a gas is formed that can be stored and used as fuel.