Uber has lost yet another executive after a vice president whose remit included the self-driving car division resigned in a blow to the company, which is currently fighting a high-profile lawsuit with Google about the autonomous technology.
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.