Eating meat not sustainable according to scientists
It seems to me another solution would be every country striving to achieve zero population growth. The USA could achieve zero population growth immediately simply by limiting immigration further. China is struggling to achieve zero population growth. Western Europe and Japan are already in population decline.
It should be up to every country not to let it's population get to unsustainable levels. That seems reasonable to me.
According to the Stockholm International Water Institute, "There will not be enough water available on current croplands to produce food for the expected 9 billion population in 2050 if we follow current trends and changes towards diets common in western nations."
Humans now derive about 20 percent of their daily protein intake from animal-based products, reports London's Guardian. But a new report published by the institute says the world's population will have to cut that figure to 5 percent by 2050 to accommodate the planet's "considerable regional water deficits."
It seems to me another solution would be every country striving to achieve zero population growth. The USA could achieve zero population growth immediately simply by limiting immigration further. China is struggling to achieve zero population growth. Western Europe and Japan are already in population decline.
It should be up to every country not to let it's population get to unsustainable levels. That seems reasonable to me.