Powering buses with banana peels and coffee grounds

Up to 50,000 tons of food waste a year won’t be going into landfills in Norway. It’ll be going into buses. How’s that? Well, the grimy grub will become transportation fuel at a new Wärtsilä-built biogas liquefaction plant outside Oslo.

New engine design halves fuel consumption - using nothing but air

A Swedish team has developed a technology that it says could halve fuel consumption by using the energy generated as a vehicle brakes.