![](http://www.jornalstop.com.br/wp-content/uploads/2016/08/keppe-motor-an-eco-technological-revolution.png)
Sep 13th, 2010 – Nexus Magazine (Germany)
Following an acclaimed presentation at the Copenhagen Climate Conference, the Brazilian inventors carry on defending their revolutionary technology. A very high efficiency and, perhaps, a Overunity effect.
Article published in the German edition of Nexus Magazine (nº 28 – June/July).