A group of researchers from Monash University in Australia have made a breakthrough in renewable energy by discovering an enzyme that can generate electricity from the air we breathe. The enzyme, called Huc, is found in a common soil bacterium and can turn hydrogen gas into a current that can power small electronic devices. The researchers suggest that this technology could power devices such as medical sensors, wearable exercise monitors, or small computer circuits that run passively on air. Huc has the potential to replace batteries that consume scarce resources, including rare earth elements. However, the researchers believe that the enzyme would not be a viable way to produce large amounts of electricity and would be best suited for low-voltage power supply applications. The researchers seek investment to develop this technology further and hope to see it on the market within a decade.