Air Pollution Carbon Dioxide Climate Change Energy Energy Efficiency Global Warming Greenhouse Effect Playlists Pollution Science Sustainability Videos Energy Efficiency (63 Videos) Playlist by Mark R. Elsis Posted on July 1, 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”]