"But even a humble loaf of sourdough requires the equivalent of about 5.5 tablespoons of diesel fuel, and a supermarket tomato, which Smil describes as no more than 'an appealingly shaped container of water'... is the product of about six tablespoons of diesel. 'How many vegans enjoying the salad,' he writes, 'are aware of its substantial fossil fuel pedigree?'... One must further account for the more than three billion people in the developing world who will need to double or triple their food production to approach a dignified standard of living. Then add the additional two billion who will soon join us. 'For the foreseeable future,' writes Smil, 'we cannot feed the world without relying on fossil fuels.' He performs similar calculations for the world’s production of energy, cement, ammonia, steel and plastic, always reaching the same result: 'A mass-scale, rapid retreat from the current state is impossible.'
Smil’s impartial scientist persona slips with each sneer at the 'proponents of a new green world' or 'those who prefer mantras of green solutions to understanding how we have come to this point.'... He finds a worthy target in the inane rhetorical battle, waged by climate activists (and echoed by climate journalists), between blithe optimism and apocalyptic pessimism.... Smil’s book is at its essence a plea for agnosticism, and, believe it or not, humility...."
From "Everything You Thought You Knew, and Why You’re Wrong" by Nathaniel Rich (NYT), reviewing "How the World Really Works/The Science Behind How We Got Here and Where We’re Going" by Vaclav Smil.
The highest rated comment over there quotes something Smil said in an interview last month: