[GraceG]

I like the farming idea.

If you can build say for instance. A self sufficient underground city with farming here on earth. Making one any where else in the solar system becomes a lot easier.

[a fool in paradise]

As farming moves indoors, what becomes of the ecosystem that includes insects and pollen?

[Pelham]

bmfl

[chopperman]

We're going to need this kind of indoor farming for that cold spell that's coming in the next couple of decades.

The Japanese already have an indoor iceberg lettuce farm:

Japanese plant experts produce 10,000 lettuce heads a day in LED-lit indoor farm

[garjog]

Living underground does have its appeal.

[Eagles6]

Already a couple of similar flashlights on the market by Streamlight and Pelican.

[Larry Lucido]

I’m working on a time machine. If it succeeds I pay you all back last week with interest.