The human race, will no doubt survive on a planet that is ultimately 5 or 10 degrees F warmer. The level of world population that can be supported under these new conditions may not be as high as the current 5.3 billion.
The relatively rich nations will have a much easier time adapting to climate change, while the less developed countries have fewer resources to pursue strategies for adaption. For example, a well-to-do country can afford efficient energy system conversions, flood protection projects, new water distribution systems, irrigation equipment, and additional fertilizers, while many of these options are not open to poorer nations. Truly international cooperation will be necessary to prevent widespread famine and other hardships created by global warming climate changes. ***