In this world, much of the Amazon basin would become a desert, and the glaciers which provide drinking water for much of China and the Indian subcontinent would all but disappear. The southern belt of the United States, countries bordering the Mediterranean – not to mention the Middle East, Australia and much of Africa – would become too hot to sustain their present populations. Alongside all of this, there would be a major rise in extreme weather events and a profound disturbance to the hydrological cycle.
