Self-driving taxi? (credit: Google) It’s the year 2030. A fleet of driverless taxis roams throughout your city, ready to pick you up and take you to your
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.