The idea behind biofules is great—use organic matter to make gas instead of dirty fossil fuels. But the process is hard to nail down. Utilizing foodstuffs to produce biofuel doesn’t make sense, and other plants entered into the biofuel production chain usually require more energy to make than the energy that is made. Researchers from Columbia University in New York have bioengineered bacteria that pulls CO2 from the atmosphere and eats electricity that is introduced to it, while expelling fuel. The US Department of Energy claims electrofuel has the potential to produce gasoline 10 times more efficiently than current biofuel methods.