ASK HN: Are there alternatives to food as an energy source for humans?

Could humans use other mechanism(s) for energy, such as batteries, or photosynthesis, instead of food?

Could this be physically possible now but as yet undiscovered; or would enhancements (such as gene editing, or surgery) necessarily be required?

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Comments URL: https://news.ycombinator.com/item?id=20027754

Points: 1

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