Urban farming can be done on an industrial scale, just look at the Netherlands, and if we wanted to feed double the amount of people on this planet urban farming would be the only practical solution. And it wouldn't just be algae soylent green nutraloafs to eat, it would be a vegan diet that doesn't taste like literal shut. The less amount of time food spends in transit is less energy wasted.

Large tracts of land need to go back to nature, we need less farms, less industry, we need to persevere the environment since we rely on its existence for our existence. We need a mass exodus of the rural areas to the urban cores, people living in the densest spaces possible, it would solve most logistical issues and it would get people out of the way of climate change. We can't save every city from rising sea levels, water scarcity, etc, the best we can do is cut our losses and try to get people out of the danger.

Also I'm not an anprim or an ecofash. I'm not against technological development, I'm against private property first and foremost. Computers are a problem, people shouldn't own them in the same way you shouldn't own a car or a house. It should all be public property, not personal. We need more public computer labs, shared computers in residential buildings, computer kiosks on the street, government mandated smartphones that not everyone should have. Social media as it currently exists needs to die, our addiction to personal computers need to be checked not because I'm some anti technology ghoul but we aren't using them right.