Climate change and global warming is essentially a product of human biology and can lead to the end of habitable geography on planet earth. Human civilization and industrial revolution leads to increase in green house gases like carbon dioxide leading to global warming. The global warming leads to increased growth of endosymbiotic and colonic archaea in humans and animals leading to methane production and global warming. The major part of the world ecosystem is made up of human population and archaeal endosymbiosis and colonic archaeal growth consequent to global warming leads to methanogenesis and increase in the speed of global warming and climate change. The wide spread use of the internet with exposure to low level EMF fields also leads to endosymbiotic archaeal growth and methanogenesis. The gut microflora deforestation and its replacement with archaeal overgrowth is more of a cause for global warming than fossil fuels and destruction of rain forest. Thus human biology is at the core of global warming, climate change and end of earth as we know it. Climate change determines human society and culture.