I worked for a couple of years for a NASA subcontractor, and it’s not hard to believe that the paperwork pile could up so that it cleared the atmosphere. As always, remember you can see more at Nate’s Website.
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.