Geologists, climate scientists and ecologists have been busy trying to decide whether we are moving from the Holocene to a new epoch recently, but one team of scientists believes it finished long ago.
Proponents of the term 'Anthropocene' believe that humans have had such a profound effect on the Earth's crust that a new epoch is fitting, and some believe the detonation of the first atomic bomb during a test seems as good a mark of it as any.
"Like any geological boundary, it is not a perfect marker – levels of global radiation really rose in the early 1950s, as salvoes of bomb tests took place," said Dr Jan Zalasiewicz, of the University of Leicester’s Department of Geology and chair of the Anthropocene Working Group.
"But it may be the optimal way to resolve the multiple lines of evidence on human-driven planetary change. Time - and much more discussion - will tell."
The Anthropocene Working Group assembled in Berlin last year, an interdisciplinary body of scientists and humanists working under the umbrella of the International Commission on Stratigraphy and "tasked with developing a proposal for the formal ratification of the Anthropocene as an official unit amending the Geological Time Scale".
The term was first coined in the 1980s and popularised by Nobel Prize winning chemist Paul Crutzen in 2000.
Sir David Attenborough, who has seen the devastating effects of humanity on our planet time and time and time again, recently told The Independent that he agrees our impact is significant enough to warrant a re-classification, as long as the term is useful.
A change of epoch does not come around very often, with the Holocene having begun 11,700 years ago at the end of the last Ice Age.
The Anthropocene Working Group has given itself until 2016 to come up with a proposal to submit to the ISC, which ultimately determines what time period we live in. This might seem like a long way away, but when you consider the earliest epoch, the Paleozoic, began approximately 541 to 252 million years ago, it's just a speck in the Earth's history.Reuse content