Researchers have discovered a method to re-use discarded shopping bags by transforming them into a fuel that can power car engines. Scientists in India say they have developed a relatively low-temperature process to convert certain kinds of plastic waste into liquid fuel as a way to re-use discarded plastic bags and other products. Many pundits describe the present time as the “plastic age” for good reason and as such we generate a lot plastic waste. Among that waste is the common polymer, low-density polyethylene (LDPE), which is used to make many types of container, medical and laboratory equipment, computer components and carrier bags.