In this lecture, Professor Brownell asks whether modern agriculture is environmentally, culturally, and morally sustainable. First, he explores how genetically modified foods both benefit and hinder world sustainability, such as with the case study of BT corn, and contamination to different parts of the environment. Secondly, he discusses the issue of animal welfare and its relationship with sustainability by exploring how modern food conditions encourage the mass production of meat. Arguments for and against the way animals are raised and eaten are also reviewed. Finally, Professor Brownell identifies shrinking biodiversity as a result of the green revolution and highlights current efforts to combat it.