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The Heritage of the Earth by Harley S. Aldinger:
Science Fiction Inventions, Technology and Ideas
"P
PERHAPS ages past, when the disclosure of an unprecedented scientific discovery would have earned the
discoverer the reward of being burned
at the stake, someone might have hit on
the right formula for controlling gravity, or perhaps otherwise solved the
problem of interplanetary travel, but
to save his neck very carefully eliminated any possibility of its discovery.
Where, or how, our author conceived
the idea he expounds so graphically in
this narration we cannot tell, of course,
but the story seems to us altogether
plausible and decidedly interesting."

('The Heritage of the Earth' by Harley S. Aldinger)
Select
an invention:
Spaceship Garden A fully-enclosed garden on a spaceship producing edible foodstuffs.
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