The Queensland University of Technology is developing an autonomous robot to deal with the one of the biggest threats to the Great Barrier Reef: Crown-of-Thorns Starfish.
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.