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Scientists at Purdue University have developed a portable generator that turns trash into electricity. About a small van size, the device can process several types of trash, including food waste, plastic and paper.

This device uses two different process depending on the type of waste: food material goes into a bioreactor that uses the yeast ferments to create ethanol and other materials go to a gasifier and are converted into propane gas and methane, which then fuel a diesel engine that creates electricity.

The machine, called a tactical biorefinery, has been designed for the U.S. military and unfortunately is going to be for military use only, but it could have widespread civilian applications in the, hopefully, not-so-far future. What comes next? Only time will tell.