The deepest, the most objective and the most indisputable criterion says: progress can be measured by the growth of the productivity of social labour. -- Leon Trotsky, The Lessons of October (1932)
Energy, the environment, global climate change, and sea level rise are all huge, vast interconnected subjects that generate much debate and controversy at every level of society. One expects this when the future of our species, and all other species, are at stake.
The center of this discussion can be narrowed down to one technological and scientific issue: the generation, use, and distribution of energy. The historic application, or utilization, of various forms of energy is a measure of human progress. Even before the rise of civilizations such as the Indus, Greek, Persian, and others long gone were relegated to the anthropology text books and museums, and even before the development of class society, human use of energy set us apart from all other species, including the higher ones such as dolphins and apes.