<story><title>Inventor harvests methane gas from ditches and ponds to power his moped</title><url>https://www.notechmagazine.com/2021/07/inventor-harvests-methane-gas-from-ditches-and-ponds-to-power-his-moped.html</url></story><parent_chain><item><author>helsinkiandrew</author><text>&amp;gt; Eight hours of hoeing in a ditch supplies him with enough fuel to ride his vehicle for 20 km&lt;p&gt;Hmm, this is an art project but you can cycle 20km fairly leisurely in an hour.&lt;p&gt;8 hours of toiling in the ditches probably might be better used growing vegetables so your food isn’t being driven in?</text></item></parent_chain><comment><author>Cthulhu_</author><text>I know HN comments have a knack for trying to min&amp;#x2F;max and optimize something posted, but honestly that&amp;#x27;s not the point here. He&amp;#x27;s proving that it&amp;#x27;s possible to harvest methane from ponds, enough to power a moped.&lt;p&gt;OF COURSE there&amp;#x27;s more efficient ways to get around, this isn&amp;#x27;t an attack on anyone&amp;#x27;s intellect or common sense and there&amp;#x27;s no need to react to getting nerdsniped by going &amp;quot;well ackchyually&amp;quot; and reinventing combustion engines and fuel from first principles.&lt;p&gt;It&amp;#x27;s fine to just go &amp;quot;that&amp;#x27;s cool&amp;quot; and move on with your life. The guy that made this knows it&amp;#x27;s not the most efficient use of his time.</text></comment>
<story><title>Inventor harvests methane gas from ditches and ponds to power his moped</title><url>https://www.notechmagazine.com/2021/07/inventor-harvests-methane-gas-from-ditches-and-ponds-to-power-his-moped.html</url></story><parent_chain><item><author>helsinkiandrew</author><text>&amp;gt; Eight hours of hoeing in a ditch supplies him with enough fuel to ride his vehicle for 20 km&lt;p&gt;Hmm, this is an art project but you can cycle 20km fairly leisurely in an hour.&lt;p&gt;8 hours of toiling in the ditches probably might be better used growing vegetables so your food isn’t being driven in?</text></item></parent_chain><comment><author>Broken_Hippo</author><text>Maybe, maybe not. It isn&amp;#x27;t like most folks can live off of a garden plot of a normal house, if you even have a garden plot.&lt;p&gt;I cannot cycle 20km fairly leisurely in an hour: I live in a mountainous area, but lived most of my life on flat ground and going uphill is freaking difficult, even if I&amp;#x27;m going at a leisurely speed - and sometimes, downhill is brakes all the way down.&lt;p&gt;And I don&amp;#x27;t know how much this person drives. Most places I go to are within walking distance, and I&amp;#x27;m pretty sure 8 hours of ditches would be less work than an entire summer of gardening (where I&amp;#x27;d have to rent a plot, since I&amp;#x27;m an apartment dweller). The majority of my foodstuffs are going to still be driven in, too.</text></comment>