““Someday drones will be commonplace in U.S. skies and, before that happens, it’s imperative that Congress enact strong, nationwide privacy rules,” ACLU attorney Catherine Crump said in a statement.”
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.