Just watched this film last night and found it very enlightening. I know that some stubborn meat-eaters and climate-change deniers will cavil about the statistics and refuse to acknowledge the solid, underlying truth: we can't have our earth and eat it too. It's impossible to deny that livestock produce an enormous quantity of excrement that is not properly treated and is a major source of pollution. It's impossible to deny that vast quantities of grain are used to produce much smaller quantities of meat while millions of people starve. Likewise, no one can argue that the oceans are overfished and cannot keep up with ever-increasing human demand for seafood. And the destruction of the Amazon rain forest by cattle ranchers has been so widely reported in numerous places that it, too, is undeniable. None of this is "vegan bull$hit." It doesn't take a scientist to do the math. Meat is not a sustainable source of food for the world's population. Sooner or later, everyone will have to kick their Big Mac habit. And both humans and the planet will be healthier for it.