Energy: What About It?

Energy has been both a driving force behind human civilizations and the source of so many conflicts and wars around the world. Today, it remains a major element which guides both economic and political decisions. Yet despite its huge influence on human life, energy remains an immense subject which is, in many ways, a purely abstract one to most of us; after all, nobody has actually seen what a kilowatt-hour looks like (though we may have seen what its output can do in the form of the applia...