Από τα πολύ ενδιαφέροντα βίντεο του AsapScience:

Δείτε περισσότερες πληροφορίες εδώ:

FAO: Tackling climate change through livestock http://www.fao.org/ag/againfo/resources/en/publications/tackling_climate_change/index.htm

UNESCO : The green , blue and grey water footprint of farm animals and animal products http://waterfootprint.org/media/downloads/Report-48-WaterFootprint-AnimalProducts-Vol1.pdf

nature: Humans are becoming more carnivorous http://www.nature.com/news/humans-are-becoming-more-carnivorous-1.14282