Geologist, economist, and petroleum industry insider Mills makes an intelligent case for oil's continuing role as a major, growing energy source. A Herculean task, one would think, given public sentiment on the matter. Mills manages it by first neatly dividing opposing viewpoints into five camps: geologists (those who espouse peak oil theory), economists (the markets will work it out), militarists (use power to secure energy supplies), environmentalists (fossil fuels: no), and neo-Luddites (fossil fuels, consumption, and materialism: no). He then conquers their positions with lively, exhaustively sourced arguments to say that there may be more conventional oil than reported, "colossal" unconventional sources, and plentiful energy substitutes. Mills shows deep understanding of the complexity of the issue, and while promising no easy fixes, he is yet hopeful: "gloomy predictions do not resemble the real world and take no account of human ingenuity." For more advanced readers.