راه حل واقعی برای جامعه ای بدون کربن - گزیده هایی از سخنرانی های استاد اعظم چینگ های -‏ قسمت ۱ از ۲

You know how much goes into cows? How much acres to raise cows? And that land can never be productive again, once a cow tramples on it and eats the grass from it. How much land, how much water, how much medicine, how much pounds of grains, and kind of protein, grains from different poor countries, pour into the cattle, before it delivers a piece of meat for one meal? It is a waste of human resources to eat meat. They say if everybody eats vegetarian diet, nobody is hungry, at least.