Plastic polymers are efficient, cheap and easy to make – but not very environmentally friendly. Hydrogels had previously not been really considered a viable alternative, because they’re, well, gels. But by attaching them to clay, that’s all changed.
What’s cooler than a hover-capable, electric-powered, super-quiet, personal VTOL (vertical takeoff and landing) aircraft? If you answered “absolutely nothing”, do read on, because NASA is preparing to oblige you.
