A lovely video on metal model airplanes
Hydrogen
techxplore.com
Coming?
Hydrogen

Hydrogen flight looks ready for take-off with new advances
The possibility of hydrogen-powered flight means greater opportunities for fossil-free travel, and the technological advances to make this happen are moving fast. New studies from Chalmers University of Technology, in Sweden, show that almost all air travel within a 750-mile radius (1,200 km)...
Coming?
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