In monetary terms, shale gas seems to be a good deal. In EROEI (energy) terms it is probably less good but it may still provide a positive return. It is in environmental terms - in the so called “external costs” that shale gas is a disaster. It may be that society is reacting to scarcity in the wrong way by following a path that is perhaps easing the situation in the short term (getting more energy) but horribly worsening the problem in the medium/long term (global warming).
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