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<oembed><version>1.0</version><provider_name>Sightline Institute</provider_name><provider_url>https://www.sightline.org</provider_url><author_name>Roger Valdez</author_name><author_url>https://www.sightline.org/profile/roger-valdez/</author_url><title>Blast from the Past - Sightline Institute</title><type>rich</type><width>600</width><height>338</height><html>&lt;blockquote class="wp-embedded-content" data-secret="r2Cosb4Fe8"&gt;&lt;a href="https://www.sightline.org/2010/10/25/blast-from-the-past/"&gt;Blast from the Past&lt;/a&gt;&lt;/blockquote&gt;&lt;iframe sandbox="allow-scripts" security="restricted" src="https://www.sightline.org/2010/10/25/blast-from-the-past/embed/#?secret=r2Cosb4Fe8" width="600" height="338" title="&#x201C;Blast from the Past&#x201D; &#x2014; Sightline Institute" data-secret="r2Cosb4Fe8" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"&gt;&lt;/iframe&gt;&lt;script type="text/javascript"&gt;
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</html><description>Editor&#x2019;s note: This post originally appeared at Sustainable Industries Journal. For permission to reprint, contact them. Imagine an efficient system of centralized heating powered by renewable energy using underground pipes to heat water and air for multiple buildings. Sergius Orata developed just such a system. Is Sergius Orata a new experimental energy start-up from Scandinavia? [&hellip;]</description></oembed>
