Renewable hx
Every economic boom in history, from Uruk onwards, had ended in bust because renewable sources of energy ran out: timber, crop land, pasture, labour, water, peat. All self-replenishing, but far too slowly, and easily exhausted by a swelling populace. Coal not only did not run out, no matter how much was used: it actually became cheaper and more abundant as time went by, in marked contrast to charcoal, which always grew more expensive once its use expanded beyond a certain point, for the simple reason that people had to go further in search of timber. By 1870, the burning of coal in Britain was generating as many calories as would have been expended by 850 million labourers. It was as if each worker had twenty servants at his beck and call. Not even Jonathan Swift would dare to write a satire in which politicians argued that – in a world where species are vanishing and more than a billion people are barely able to afford to eat – it would somehow be good for the ...