Researchers at Southern Illinois University Carbondale have come up with a way to make 3D-printed food out of plastic waste. They call them µBites (microbites), and they could be the innovative answer to global problems over waste plastic and food scarcity. 

The process is fairly straightforward. The team mixes waste biomass and plastic, which is processed into slurry. A special yeast converts the slurry to proteins that are 3D-printed into various forms, like cookies.