The power system configuration of HydroBot is quite sophisticated. It uses the Horizon H-60 PEM fuel cell as its “engine,” ...

Developed by the research team at the Helmholtz Institute for Renewable Energy Research in Erlangen-Nuremberg, Germany (HI ...

MEVITA's design makes it both sturdy and easy to build by using a minimal number of parts that can all be found and bought ...

The best robot lawn mowers we've tested will free you from pushing a noisy, gas-powered machine around the yard every weekend.