Emile Spore wrote:It would be interesting to hear about a vegan civilization that survives for even a hundred years in the frozen north.
I think humanity's closest attempts to this were in somewhat moderate climates, and vitamin D deficiency seems to have strongly selected for low pigmentation in those populations.
Travis Philp wrote:Plants can give all the nutrients that animals provide.
Very nearly so. Vitamin D is difficult without bright sunshine or pale skin. Vitamin B12 is from microbes rather than plants or animals. From Wikipedia:
While lacto-ovo vegetarians usually get enough B12 through consuming dairy products, vegans will lack B12 unless they consume multivitamin supplements or B12-fortified foods. Examples of fortified foods include fortified breakfast cereals, fortified soy products, fortified energy bars, and fortified nutritional yeast. According to the UK Vegan Society, the present consensus is that any B12 present in plant foods is likely to be unavailable to humans because B12 analogues can compete with B12 and inhibit metabolism.
Claimed sources of B12 that have been shown to be inadequate or unreliable through direct studies[30] of vegans include laver (a seaweed), barley grass, and human gut bacteria.
Traditional vegan societies seem to have consumed enough insects accidentally to avoid deficiency, so a yearly oyster or egg would probably be plenty.
Speaking of which, I think bivalves would be a good low-maintenance food animal. They're even less domesticated than bees, and unless some invasive species is introduced, they tend to be good for whatever body of water they inhabit.
"the qualities of these bacteria, like the heat of the sun, electricity, or the qualities of metals, are part of the storehouse of knowledge of all men. They are manifestations of the laws of nature, free to all men and reserved exclusively to none." SCOTUS, Funk Bros. Seed Co. v. Kale Inoculant Co.