http://www.theguardian.com/environment/2014/jul/21/giving-up-beef-reduce-carbon-footprint-more-than-cars
https://www.youtube.com/results?search_query=Beef+carbon+emissions
http://o.canada.com/news/beef-is-worse-for-the-environment-than-poulty-pork-or-dairy-study
https://www.youtube.com/results?search_query=Beef+is+worse+for+the+environment+than
https://www.youtube.com/results?search_query=Beef+carbon+emissions
https://www.youtube.com/results?search_query=Beef+is+worse+for+the+environment+than
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