From Heinz Dähling
Source: https://kaltesonne.de/das-gruene-hobby/ [in German; “translate to English” button in the top right]
For millennia, the use of energy sources beyond muscle strength was limited to mechanical energy from flowing air and water and chemical energy from renewable sources. The limitations of these then also limited the human population, which for millennia barely exceeded a billion. In the middle of the 19th century, around 1.5 billion people settled on earth. Only with the utilization of fossil energy sources, with technical progress in the industrialized countries and the associated increase in food production, the world population rose by leaps and bounds, to 2.5 billion by the middle of the 20th century. However, this is still moderate compared to the subsequent tripling to 7.5 billion today,which took place almost exclusively in developing countries. And all forecasts assume that this development will continue. In view of this, going back to mechanical and renewable energy sources and calling it “sustainable” is more than strange. Continue reading “The Green Hobby”
