In the 1970s there was already a debate about whether the emergence of the modern phyla was explosive or gradual but hidden by the shortage of Pre-Cambrian animal fossils.
I would give anything to see prehistory -- unimaginable Pre-Cambrian time, when life was just a chaos of cells, pinballing around a primeval sea -- exposed in today's sunlight.
Factors measured in 20 farms in the Cambrian Mountains included greenhouse gas emissions from agricultural management, existing land use and fuel and energy use.
The Cambrian Mountains (in the modern sense of the term) are generally less popular with hillwalkers and scramblers than the ranges to their north and south.
