Sources below. Example of how pro-meat people cherry-pick their studies below the sources.
Sources for Primate Information
Tooth wear pattern analysis: Performed by Dr. Alan Walker of John Hopkins University. Study findings reported in NY Times, May 15, 1979. Overview here: http://www.scribd.com/doc/214396900/Science-Verifies-That-Humans-Are-Frugivores
Robb Dunn, Department of Biology at North Carolina State University
National Primate Research Center, University of Wisconsin-Madison
Oelze et al, 2010, National Academy of Sciences
Sources for Energy Required to Produce One Pound bar graph:
Study: THE NET ENERGY BALANCE OF CORN ETHANOL Roger Conway Office of Energy Policy and New Uses/USDA The Intersection of Energy and Agriculture: Implications of Biofuels and the Search for a Fuel of the Future The Faculty Club University of California, Berkeley October 4-5, 2007 http://are.berkeley.edu/~zilber11/Conway.pdf
Sustainable Energy: Without the Hot Air by David JC McKay, 2009
Study: Sustainability of three apple production systems John P. Reganold, Jerry D. Glover, Preston K. Andrews & Herbert R. Hinman Department of Crop and Soil Sciences, Washington State University, Pullman, Washington 99164, USA Department of Horticulture and Landscape Architecture, Washington State University, Pullman, Washington 99164, USA Department of Agricultural Economics, Washington State University, Pullman, Washington 99164, USA http://www.nature.com/nature/journal/v410/n6831/pdf/410926a0.pdf
Source for UN Graph, “Meat Consumption and CO2 Emissions” “Livestock's Long Shadow,” a report by the United Nations Food and Agriculture Organization, 2006, Lantmannen
Source for Post Farmgate/Productions Emissions bar graph: Garnett, Tara. “Livestock-related greenhouse gas emissions: impacts and options for policy makers.”sciencedirect.com. Elsevier Ltd, n.d. Web. 7 Nov. 2014. http://www.sciencedirect.com/science/article/pii/S1462901109000173.
It takes 2 1/2 pounds of grains to create a pound of chicken, 6 1/2 pounds to get a pound of pork, and 7 pounds to get a pound of beef. (Ephraim Liebtag, “Corn Prices Near Record High, but What About Food Costs?”, February 2008)
Watch out for the cherry-picking that pro-meat folks do with the environmental data – here is an example 1) They cite comparison studies showing that meat production is more environmentally friendly today than it was in 1977 (this is referring to CAFOs, though, and is largely due to increases in CAFO efficiency) 2) They claim that, despite they themselves citing CAFO studies, the studies cited by their opponent to show environmental costs as devastating are done on CAFOs and are therefore not valid, and claim that grass-fed/ “humane” etc has less of an impact. 3) This is incorrect since CAFOs are more efficient and economical than grass-fed/etc operations; they use less resources and produce more yield per input and per acre. Even Dr. Loren Cordain, author of the “Paleo Diet,” admits in his writings that the world population would have to be reduced by 2/3 in order to feed the world with grass-fed, “humane” meat. So, in other words, don't fall for their faulty logic. Go veg!
