Animal sourced foods and the environment.

There is no question that the current affair of livestock production is an environmental disaster. The most notable problems being greenhouse gas emissions, land usage and water usage.  These problems are very severe and the best course of action would be to drastically reduce the consumption of meat/dairy, and hence the production in the world.

But, what is the optimal system for the environment when it comes to livestock production?  If everybody in the world consumed no animal foods would that be the best option? Or is some animal foods a good thing?  These questions will be addressed.

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