For several decades, part of the scientific community has observed and denounced the magnitude of the anthropogenic environmental change. A recent concept has emerged from these concerns, which crystallises the idea of a lasting planetary transformation: the Anthropocene, the proposal to define a new geological epoch that ends the Holocene, and in which the human being has become a geological force. This work assumes that the Anthropocene brings modern dualism between man and nature to its extreme limits. In the first part, the actual debates from geologists on the Anthropocene are discussed, as well as the precursors. The multiple dimensions of the Ôgeological forceÕ are presented, as well as the consequences for the protection of nature. The second part is interpretative. A typology of different understandings of the Anthropocene is given. The modalities of interdisciplinary work between natural and social sciences are examined. The question of how it is possible to overcome modern dualism is analysed. A special question is to understand how the Anthropocene gives a new meaning to our understanding of time. Finally, it is shown how and why the Anthropocene asks us to adapt our planetary representations. There is no consensus on the meaning of the Anthropocene, which is a blessing for some, the announcement of a disaster for others. The thesis offers a philosophical look and original interpretation on a controversial issue of great news.