Climate changes are currently the subject of intense scientific research and many questions are being asked by the general public, but on the other hand there is an obvious failure on the part of politicians to make decisions. This is very strange since so many factors contribute to our awareness of the interactions that take place at planetary scale between physical environments (the oceans, the atmosphere, the continents), chemical environments (substances found in water, in the air, the soil, etc.) and living environments (florae and faunae) and to our ability to measure the impact of human activities on these environments…/…