IO

So Earth becomes uninhabitable for some reason and Earths population relocates to IO, which is a moon of Jupiter. This is not a very bright move, considering that the radiation there would kill a person within 24 hours. I guess that the writers of this film weren't aware of this fact, lol ?

I would think Europa would be the choice, or maybe Ganymede. Io seems like one of those neighborhoods you subconsciously lock your car doors in as you drive through, except there aren't any cars on Io, or neighborhoods, for that matter. They should have just moved to Detroit.

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The challenges of living on IO would be far greater than remaining here on Earth, no matter what happened here. Also the lead character seems to be doing quite nicely here and even managing to raise a child as well, lol

They should have moved to the moon, made a base, named it alpha.

Was it worth a watch?

Yes, it was worth watching, it wasn't too bad