[sarahj]

> Maybe you can explain to me then how it is that this makes a significant difference in global warming. The carbon that is released by cows and humans after consumption of plant matter was derived from said plant matter. The carbon in those plants came from the air. Hence, this is a closed system where carbon is taken from the air by the plants, consumed by the animals, and then put back into the air by the animals. There cannot be a net gain of carbon from this.

Instead of the energy taken to grow those plants going to feed people - they are used to grow animals. This takes an enormous amount of input energy from farming the plants, to transporting them to the animals. Not forgetting water transport also. Then there is the energy that is taken to manage the huge sums of waste that these animals produce (most of which is stored in huge silos or pits, which ends up leaching into ground water - but that's another thing). Then there is the energy to transport, kill, transport, package, transport and eventually sell - so the energy / calorie of animal food is no where near efficient as it is for plants and beans. Basically, it is not a closed system - we input so much energy into sustaining our meat habit (as well as the ethical implications of killing 100,000,000-500,000,000 sentient animals a day - including fish and the resulting bycatch)

I think we agree when it comes to the impact of a solution - there needs to be a HUGE concerted effort to even make a dent - people can't immediately change the nature of the worlds largest companies - but I believe that our only hope is to promote local change (to get people to commit to a lifestyle change that has to happen one way or another) - and push for governmental reform - will it be perfect? no. Will it be easy? nope. But we have to start somewhere - and I think diet and local economies might be a good first step.

[insoluble]

> we input so much energy into sustaining our meat habit

Well, the energy alone wouldn't really be a problem if we were using green energy. The Sun provides more than enough energy for all sorts of human endeavours. At the same time, I absolutely agree that much of the current production and delivery system, food and otherwise, is inefficient. Efficiency is an important matter, but alone it's probably not enough to curb global warming in the long run, especially not if the population keeps growing.

As you might have guessed, I eat meat. The funny thing is, I don't do it for taste reasons. I do it because it's cheap protein that works well with my digestive system. For some reason, I can't consume more than 15g fibre per day without problems, and I've tried for months at a time before to see if I would simply adjust, but that didn't happen. If there were affordable, safe (no mercury or other contaminants), and quick-to-prepare plant-based food that went well with my body, I would certainly be on it. So far I haven't found such a thing. One of the most peculiar aspects of all this is that I constantly hear about how efficient plant-based foods are supposed to be in terms of production, yet plant based protein (without high fibre) is never cheap. It's always more expensive than meat/egg/milk based protein. How is it that plants are so expensive when they're supposed to be so efficient? Without that efficiency being seen by the consumer, it's unreasonable to expect everyone to switch.

On the topic of changes in the system, I personally would prefer the government-based approach where essential technologies for green energy were at least subsidised enough that they were on-par with fossil fuels. The problem is that companies might take advantage of the subsidies to increase their own profit margin, which is why I suggested that the production be fully socialised, so that profit doesn't get placed at higher priority than the environment. Moreover, there would be no unreasonable burden on individuals, as would be the case to expect everyone to simply buy a Tesla.

[sarahj]

One of the reasons for the relative expense is the heavily-subsidised corn (and a few other) industries which pretty much all goes to animal feed.

That being said, my food costs were easily cut in half when I went vegan (and now, they are about 1/4 after some fine tuning of some other recipes) - I mostly get protein from chickpeas, kidney beans and lentils - which are all super-cheap compared to meat. I also eat a fair bit of tofu (which is very low in fibre and which is also very cheap compared to meat). Tempeh is another option, but I don't tend to make it often. We generally cook a big batch of food at the beginning of the week - which means time to prepare is amortized nicely (and frying tofu is very quick also)

I will admit that processed vegan meat-alternatives do tend to be more expensive than their animal derived counterparts, and not the healthiest - so I tend to avoid them - most of the expense is due to small production runs and limited quantity - and the extra processing.