"Currently 37% of the global harvest is fed to livestock, who in turn give back around a third of the calories they consume in meat, dairy products and eggs, resulting in a net loss of over a quarter of all the food we produce. Almost all of the world's soya ends up in animal troughs, as does around two thirds of the maize we grow. Deforestation, biodiversity loss and greenhouse gas emissions are all occurring as we continue to destroy vulnerable ecosystems like the Amazon rainforest and Cerrado grasslands to produce ever more livestock feed." (Quoted from article)