Research challenge: clean energy from coal

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Abstract
The need for the use of coal as a source of energy presents an environmental problem of enormous scope and difficulty, and physicists can contribute much toward solving this problem. Both coal as a material and the technical processes employing coal present “dirty” problems. The fact is, however, that the complexities involved in this problem create possibilities and need for applied research of a high quality. For example, to minimize the pollution, recent developments often resort to indirect or elaborate means for extracting the energy content of coal. We must look to research to help us use energy from coal without ripping up the Earth and unduly polluting the atmosphere.