> My one hope for AI, robotics, self driving cars, is that they can enable people in cities to migrate back to rural places.

Wouldn't it be better, at least for the Earth, for everyone to live in cities? This way, more of the world can remain fairly untouched by humans, and it could still remain easy accessible from the city for recreational purposes.

The solarpunk ideal of living a rural life requires more road infrastructure, which cuts off wildlife routes and natural drainage, and even with EVs, still pollutes the air from tire wear.

That is my understanding too, but many people equate rural life with „natural“. Unfortunately the rural environment is all but natural. The cultural landscape that has been engineered over centuries all but displaced true wilderness and is largely devoid of biodiversity. The better we become at industrial agriculture, the worse the situation is.

That depends on the rural environment. Especially grazing lands, like north European coastal heathlands, may have been managed with controlled burns in between grazing for a thousand years, to the point that they have their own biodiversity, that may get lost if they are disused.

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Not everywhere, you are looking at only suburbs vs cities.

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We've already touched ~all of the arable and non-arable land that's near to where people want to live. Forests clearcut, swamps (and deltas and the Netherlands) drained, rivers rerouted, reservoirs established, plains tilled, roads built, mountains conquered: We've been shaping and expanding the habitable Earth as it suits us for a very long time.

We're humans. We do that stuff.

And we're natural creatures like the rest of them are.

It would also be better for the earth if there were no cities and everyone went back to village farming and local communities. I also don't see that ever happening nor do I want to ive in a city.

A very large fraction of land (~50%) is currently used to grow biomass to feed 8 billion humans. Nothing about that land is 'natural' - it's a carefully engineered environment that's quite hostile to animal life.

The land that people live on, whether it's in a city, a suburb, or in a rural manner is a rounding error compared to those demands.

This only looks at land mammals rather than plant crops, but...

https://xkcd.com/1338/

> Wouldn't it be better, at least for the Earth, for everyone to live in cities? This way, more of the world can remain fairly untouched by humans

Where's the food going to come from?

Farms - with a near infinitesimal number of farmers compared to the numbers living in cities .. exactly as things are trending now.

It's common enough, here at least, to have a small family cropping 13,000 old school acres - tilling, seeding, waiting, harvesting, etc with big machines and Ag-bots.

eg: https://www.youtube.com/watch?v=PpNMSSGWnOI

And the best way for Earth is we all migrate to Mars aboard Elon Musk's spaceship.

If you're going to live underground(and you'd have to on Mars) you might as well do it here, at the bottom of the ocean, or if you're feeling particularily ambitious - even on the moon. There is literally zero advantage to doing it on Mars, except for the achievement.