Nothing is more vital to the survival of human populations than an abundant (if possible an infinite) flow of cheap energy. This is what we thought we had all through the C20th century, and what we now find we do not. Most well-informed persons are vaguely aware that oil and gas supplies are peaking or have now peaked; yet there are still government departments and many news media (including as yet ABC TV Current Affairs) that would prefer to know and think about this as little as possible. Despite warnings from the Australian Commonwealth Scientific and Industrial Research Organisation and the Australian Academy of Science, the possibility that a future Australia might lack the fossil energy to transport food to its cities, or to make the nitrate fertilizers and import the heavy rock phosphates without which crops won't grow, has had as yet no effect on Australia's population or immigration policies.
Growth economists and many who see themselves as experts in fine-tuning immigration policy do not find it easy to accept limits to growth. Yet a piece of stockmarket wisdom runs: 'If something can't go on for ever, sooner or later it won't'. The current population boom, which has Australia's population growing at nearly two per cent a year and, if this growth rate continues, on course to pass 100 million by the end of the century, almost certainly won't.
This collection of essays on a world running out of energy first appeared in 2005. It has now been re-edited, and updated. Twenty of the twenty-four chapters are new or substantially re-written. Sheila Newman, the Australian polymath who co-edited the first edition with the international energy economist, Andrew MacKillop, is now the sole editor. Indeed much of the book is the Sheila Newman show. She has pulled together an impressive range of technical experts, including Seppo Korpela and Colin Campbell, then expanded the book's range through her wide-ranging introductions to each section. She also contributes nine of the book's 24 chapters, plugging what might otherwise be gaps in the argument.
Population and demography are not the main focus of this book, but they are issues waiting in the wings of every chapter. It is taken as read that if there were fewer people our energy options would expand, and vice versa. Yet the main focus is...