Experts have been warning for years that the Earth has a limited supply of fossil fuels. But the fact that we will run out of oil sooner rather than later has not grabbed our collective attention. We have been vaguely aware of the problem, but, instead of changing our energy-hungry ways, we have carried on driving ever-bigger cars or using airplanes for cheap flights to Paris or New York, much as we used to take the bus to the next town.
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