Carbon Dioxide Climate Change Energy Energy Efficiency Global Warming History Playlists Solar Energy Stirling Engine Sustainability Technology Videos Stirling Engine (43 Videos) Playlist by Mark R. Elsis Posted on July 2, 2020August 8, 2020 Author EarthNewspaper.com Comment(0) [dntplgn recurring_amt1=”4.50″ recurring_amt2=”3.00″ recurring_amt3=”1.50″ item_name=”Donation for EarthNewspaper.com” paypal_email=”mark@eimagine.net” currency_code=”USD” currency_symbol=”$” return_url=” https://earthnewspaper.com/index.php/thank-you-for-donating-to-earthnewspaper-com”]