Future sustainability is really a simple thing to fix. As touched on in my previous post, but I will expand. We can use vertical farming to grow up not out, produce higher yields using better watering techniques and augmented artificial lighting rather than natural lighting. We can use more efficient proteins such as farmed fish or even grass hoppers which are amazingly more efficient than cattle and other livestock raising. And energy is the easiest fix out there. The only reason it is still a problem is big oil and the profits made from it. Solar energy in deserts, capturing energy from the tides, using wind energy, or even nuclear energy. All of which are vastly more efficient than oil and other fossil fuels and all less harmful to the environment.