How Feasible Is A Us $100 Trillion Transition To A Green Economy Until 2030/2050?

The paper analyzes from various angles the feasibility of the transition to a green economy which has been evolving from a concept to an action plan with key targets and deadlines. The cost of the transition has been estimated and many implications have been assessed. But a planned global transition from classic fuels to renewable energy, involving 8 billion people, is a very large project that may encounter many challenges in its implementation. The analysis attempts to identify some of these challenges and to propose clarifications and solutions. The conclusions suggest a gradual approach and a permanent adaptation to the possibilities and limits encountered by the peoples and economies of the Earth. This adaptation is the more so recommended as the historical responsibilities to the current climate change situation are different, while the impact of climate change is often more oriented towards developing countries.