Coal fueled the industrial revolution and has become a major source of energy in virtually every country. In the United States, almost half of the energy used to generate electricity comes from burning coal. Relatively few people are aware of the health threats posed by coal-derived pollutants, and those who are aware lack the political clout of the coal industry. Lockwood's straightforward description of coal as a health hazard is especially timely, given the barrage of marketing efforts to promote coal as part of "energy independence." His message is clear and urgent: Coal-fired plants make people sick and die, particularly children and those with chronic illnesses, and they cost society huge amounts of money desperately needed for other purposes.