It is hoped that, when it arrives, vat-grown meat will be vastly more environmentally efficient, requiring fewer resources to grow, not to mention being free of animal suffering. The current process is not vegetarian, though, using animal blood products in the growth medium.
On a tangent: earlier this year, scientists mapped the cow genome, and discovered that the genes involved in making cattle docile are in regions which, in humans, are involved in mental retardation.
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