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kaspars.net | ||
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www.energy.gov
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| | | | | Heat pumps are increasing in popularity; as of 2020, over 17 million housing units had them installed. Heat pumps are helpful year-round, because they provide cooling in the summer as well as heating in winter. | |
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www.heatgeek.com
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infinitedigits.co
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| | | | | Lets use physics to find the exact number of ice cubes to drop into a scalding hot cup of coffee or tea to make it the perfect temperature. | |
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nca2018.globalchange.gov
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| | | This report is an authoritative assessment of the science of climate change, with a focus on the United States. It represents the second of two volumes of the Fourth National Climate Assessment, mandated by the Global Change Research Act of 1990. | ||
