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Chemistry is a science whose goal is not only discovery, but also and above all creation.  In this, it is an art of the complexification of matter.  To grasp the logic of the latest developments in chemistry, we have to take a step back in time some four billion years. Chemistry videos  plays a central role in our daily life, both through its place in the natural sciences and knowledge, as well as through its economic importance and its omnipresence.  By dint of being present everywhere, it is often forgotten, and it risks not being reported anywhere.  It does not put on a spectacle but, without it, the achievements that we agree to find spectacular could not see the light of day: therapeutic exploits, spatial feats, marvels of technique, etc.  It makes a decisive contribution to the needs of humanity in food and medicine, clothing and housing, energy and raw materials, transport and communications.  It provides materials for physics and industry, mode...