The resurrection of the classical Marxian ecological critique in the context of the current planetary emergency has led to the return of the concept of the dialectics of nature, associated with the work of Frederick Engels in particular. In the century following the deaths of Charles Darwin and Karl Marx, the dialectics-of-nature conception played a formative role in the development of the modern ecological critique within science, notably in Britain, and helped inspire the contemporary environmentalist movement. Nevertheless, all of this (...) occurred outside the dominant streams of Marxian thought and practice, where a great chasm had arisen in this area. Whereas official Marxism in the Soviet Union reduced the dialectics of nature to a fixed dogma, Western Marxism rejected it altogether. In the current Anthropocene Epoch in the geological time scale – and in what is referred to here as the Capitalinian Age of the Anthropocene – a new historical-materialist synthesis constructed on classical foundations, reintegrating the dialectics of nature, so as to address the immense ecological challenges confronting humanity, is seen as objectively (and subjectively) necessary. (shrink)