"... the cause of the sixth mass extinction is a very different type of cataclysm: expansion of one element of biodiversity to planetary dominance. In short, that is, expansion of the human enterprise—the explosion of the numbers of Homo sapiens and their domesticates and the near-instantaneous (in terms of geological time) burst of ecosystem altering and destroying technologies. That expansion has created a new geological epoch, dubbed the Anthropocene ... The term Anthropocene, meant to replace the formal, geologically accepted label of the Holocene epoch, encapsulates the consequences of humanity's activities on Earth's life-support systems. Indeed, humanity's planetary impact includes alterations of geological processes so profound as to leave stratigraphic signatures in multiple structures of the Earth's surface. These new structures are technofossils like plastics, metal junk, radioactive wastes and other synthetic material footprints ... Therefore, the term Anthropocene is increasingly penetrating the lexicon of not only the academic socio-sphere, but also society more generally (e.g. it is now an entry in the Oxford English Dictionary) and is useful for discussion of the sixth mass extinction."