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solar energy Writing Contest Entry
Mad Scientist Works For Greenhouse Heating Independence Down To -25F
Writing ..
date_range March 22, 2018
Can you build a solar-powered greenhouse that keeps temperatures above freezing when outside temperatures drop to -25°F? That's what retired engineer
7 Surprising Facts About Renewable Energy
Lester B..
date_range May 26, 2015
earth-policy-instit	
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