… The Navy plans to use the fleet of deep and shallow water gliders with their relative low cost, minimal power usage and longevity at sea, to acquire critical oceanographic data to improve positioning of fleets during naval maneuvers.
Robots clean rivers and sort waste, monitor ecosystems, and inspect renewable-energy infrastructure. But even the greenest robot has an environmental footprint.
EPFL engineers have designed acoustic cavities that convert sound waves into thrust, propelling small robots and ultralight aerial vehicles without on-board actuators or electronics.