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Eric Parish asked: As our population grows and the earth’s resources are strained like never before, many people have questions about geothermal systems but are not sure about some very fundamental concerns.  Hopefully, this brief article can open your eyes to the potential of geothermal system. How does geothermal work? The basic principle is that a geothermal heat pump extracts …

Cap and trade Cap and trade is a regulatory system that sets a government limit on overall emissions of pollutants like the warmth-trapping gases scientists have linked to international warming — the “cap.” Every company gets a bound amount of credits or permits, beyond which companies cannot emit a lot of pollution. It then permits utilities, makers and different emitters …