Inventions

Is metal 3D printing ready for the factory floor?
MIT tests pill to deliver RNA vaccines and therapies
New space plane would fly directly into orbit from a runway 
Flying “AirCar” cleared for takeoff in the EU
Flexible device hugs pipes, turning waste heat into electricity
New biodegradable straws are made by bacteria 
Clay from kitty litter pulls methane emissions from air
China builds “artificial moon” on Earth