The term Anthropocene is used to describe the emergence of humans as the major geological force affecting the Earth. This article on the BBC website reports on new thinking that dates the start of this large-scale planetary effect to a time over 400 years ago. Since World War II which many have assumed may have been the start of the Anthropocene (literally “The [geological] Age of Humans”) the term “The Great Acceleration” for these planetary effects may be more appropriate. However one uses these terms, the more important issue is whether or not human impact has ‘progressed’ beyond the point of enabling a long-term sustainable co-existence between the Natural World and the ‘Machine World’ created by humans that has now invaded the Earth’s systems. These natural ‘spheres’ include litho-; atmo-; hydro-; cryo- and bio-spheres that support the techosphere and memospheres created by human, themselves a part of the biosphere). The sphere of life evolved over 3.5 billion years. The technosphere (tool and machine -making) by hominid species around 2 to 3 million years ago, but the truly global impact of the technosphere may now be considered as starting around 400 BP while the exponential “Great Acceleration” started only around one lifetime ago for those of us in our mid-70s!