I see that Sir Paul McCartney is suggesting people should give up meat for one day a week in an attempt to go green. Meat production, especially from cattle, has a significant impact on the environment. It takes 10kg of grain to produce one kg of beef. At a time when grain prices are soaring because of food shortages (caused in part by big increases in demand for meat), giving up meat for one day a week will help, assuming we were all to do it.
As I have mentioned a few times on this blog, I have gone much further than that. I only eat meat at the weekend or on special occasions and have largely, but not completely, cut out dairy products. (It's amazing how much better tea tastes without milk!)
The solution to a number of environmental problems is to cut out over indulgence rather than cutting out something altogether. Humans evolved as omnivores, ie eating both plants and animals. But we eat too much animal products than we have evolved to eat with consequent harmful effects on health and the environment. Yet calls to cut out something completely may be counter productive. Telling everyone they should go vegetarian just won't work. Suggesting people cut down rather than exclude may achieve something more positive.
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