Experts who estimate the cost of planet's overheating have recently thrown a paving stone in the pond. If nothing is done, the phenomenon will devastate the world economy and will create more than 200 million refugees.This is not the only signal to anticipate serious economic and human consequences if the States do not address the problem seriously.



However, this is the first time that high level economists also precisely outline the danger and do not hesitate to use very alarmist terms to give the measurement of this announced catastrophe. If nothing is done, the overheating will devastate the world economy as much as the two world wars and the crisis of 1929. The economists provide this warning with a will hardly hidden to create an electric shock and not to be simply prophet in the desert.

The impressive 600 pages investigation and futurology work predicts, if nothing is done, a very serious deceleration of the world economy, with an estimated cost of more than 5500 billion euros. To fight against the spiral of the rise of the temperatures, the countries should devote 1% per annum of the world GDP, that is to say 275 billion euros. But if the world takes no measures, the phenomenon will result in a bill representing between 5 and 20 times this amount! Another consequence, more dramatic still, according to the report, the rise of the oceans' water level, caused by the melting of the ice-barrier and of the glaciers, will generate more than 200 million refugees and will cause the extinction of 40 % of the animal species.

In spite of these facts, the experts are still optimistic because the world has time and money to act. The international community, but especially China, India and the United States, has to mobilize itself to dam up the climatic overheating. Another suggestion of the report is that the world must act cohesively, because if one country alone immediately stopped the totality of its gas discharges, it would take only thirteen months for China to compensate for them with the current growth of its economic activity.

The rich countries will have to help the poor countries which will suffer a hard blow. It is right that the rich countries should pay a little more than their quota of 1 % of GDP. Their action must also be made through partnerships, as in the Amazonian forest, because world deforestation creates more emissions than the transport industry. Even if the rich countries take on them to decrease their emissions from 60 % to 80 % till 2050, the developing countries must also contribute.

The climatic change is the greatest threat to the market economy which the world ever knew, and experts suggest three types of measures: firstly, to tax the carbon dioxide emissions; secondly, to generalize technologies with weak carbon emission; finally, to dismantle the obstacles to the improvement of the energetic efficiencies, to inform, educate and convince the private individuals of the measures to be taken individually to fight against this phenomenon. The ball is now in the camp of governments which must convince the taxpayers and the industrialists of the urgency to make efforts.