British clean-tech firm H2GO Power has partnered with Ballard Unmanned Systems in what may be the first-ever test flight of a 3D-printed, hydrogen-powered drone. According to an H2GO Power media release, the flight launched in late August from a test site in Boston. Several tech firms have soared into hydrogen-fuel research as the next generation in drone power systems. … [Read more...] about Clean-energy Firm Claims First-ever 3D-printed, Hydrogen-fueled Drone Flight