
Why don't we have electric airplanes?
Daniel and Kelly’s Extraordinary Universe
00:00
Jet Fuel - The Amazing Thing About Jet Fuel
Sana: Jet fuel has forty to 50 times as much energy per kilogram than the best batteries we have today. It takes millions years to boil it down from sunlight into plants, photo synthesizing and then decaying. 25 real, real little guys, 25 tiny elves, that could do as much work as 25 grown men would power an airplane on a hamster wheel.
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