Management in a post +4°C environment

Even if some still deny the global warming phenomenon, for purely short-term political reasons, facts and figures are now numerous enough to be absolutely sure that the increase in temperature on the surface of the Earth will be several degrees at the end of the 21st century. The only unknown fact is exactly how big this rise will be. The range is between 3 and 4°C, and more and more climate scientists think that 4°C is more and more probable considering the measures which have not been taken and are still not taken. Consequently, this drastic change, unseen since man appeared on Earth, will have huge impacts on all walks of life for the environment in a broad sense and of course for mankind in social and economic terms. This study first examines what the climatic situation would be at the end of the 21st century in the light of the scientific evidence available. Then, in the hypothesis of a +4°C world, the social, economic and management consequences are investigated. Finally, in front of this never seen challenge, a number of solutions to cope with this +4°C world are examined and proposed. The conclusions are that huge changes are needed to build new economic and management models and practices. Otherwise, the outcome is simple enough; mankind will not be able to survive, at least as it has been known since the appearance of homo sapiens