geothermal
(adjective)
Pertaining to heat energy extracted from reservoirs in the earth's interior.
Examples of geothermal in the following topics:
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Sustainability Initiatives
- Solar, wind, geothermal, and ocean energy: This principal advocates employing only sustainable energy technology—solar, wind, ocean, and geothermal—that can meet our energy needs indefinitely without negative effects for life on Earth.
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Building efficiently
- Look into drilling geothermal wells that use ground temperature to both heat and cool.