The right way to read that chart is “20% of emissions is in making energy for people, 70% of emissions is making energy for literally everything else”. If you consider that my other major personal sources of emissions are driving, domestic heat/hot water, and electricity, that’s saying 1/5 of my personal emissions are just from what it takes to provide my food.
But meat is damaging for more reasons than emissions. It’s also a major source of excessive water consumption, land use, antibiotic resistance, and pollution of potable water sources (runoff from excrement and chemicals used in the production of food for livestock, which is actually the majority of food grown…which is another reason…it’s just inefficient AF. Our food eats way more food than we do, and almost all necessary micro and (and all macronutrients) are available directly from the plants anyway.
I’m not saying we all need to be plant based, but the typical American diet is far too focussed on the meat. It’s practically heresy to go a meal without consuming the flesh or excretions of at least one beast. Simply put I think it’s unsustainable to continue consuming meat at this rate, and literally impossible to change the meat industry to grow meat more ethically and sustainably (as in, there isn’t enough arable land in the world to sustainably and “ethically” (in the modern sense of free range/pasture raised-and-finished, limited antibiotic use, etc) grow meat at the rates we are consuming it. I think it’s more immediately achievable to change that attitude and reduce consumption first and foremost.
Also I do agree that roads should be made of more sustainable materials (though improving mass transit would be an even bigger win, IMO. Make sections of cities car-free (save for emergency services, local deliveries, trash pickup, busses, etc) easily accessible and interlinked by mass transit and park-and-rides from the suburbs. Make most commutes by train/subway faster and easier than driving and people will switch. Bikes and scooters available at every stop. Make employers provide transit and bike/scooter passes. Incentivize employers having hybrid and WFH environments. So much stuff we could be doing, but tearing up or paving over roads that still have useful life left in them shouldn’t be among them.
We were in a weird spot after the Industrial Revolution but before globalism.
Post WWII recovery changed that, when most of the developed world (sans America) was literally in shambles.
I don’t think we’ll ever see another full out war between major powers. Capitalism and the all-mighty dollar will prevent that. But at the same time it will encourage proxy wars.
Scarcity is a concern but again mostly for the smaller powers. More than likely it’ll be some sort of indebtedness between impoverished countries and their pimp nations backing them out of the proxy wars they created.