Today: 18.Jul.2018

Paul Driessen, senior policy analyst for the Committee For A Constructive Tomorrow: It seems nearly everyone wants to advance sustainability principles. The problem is, no one really knows what they are. Real sustainability means responsible conservation and stewardship of natural resources. The public relations variety is mostly image-enhancing fluff.

Published in People - General

Ferruccio Ferroni, Dipl. Ing. ETH, Theo Schaub, Dipl. Ing. In der Schweiz ist der Begriff Nachhaltigkeit in der Bundesverfassung, Art. 73 wie folgt umschrieben: „Bund und Kantone streben ein auf Dauer ausgewogenes Verhältnis zwischen der Natur und ihrer Erneuerungsfähigkeit einerseits und ihrer Beanspruchung durch den Menschen anderseits an.“ Auf die Prozesse der Energieumwandlung angewandt heisst dies nichts anderes, als dass man der Natur nicht mehr Energie entnehmen soll, als man nach der Umwandlung gewinnt. Bei einer Nutzenergie von 2300 kWh/m2 und einem Erzeugungsaufwand von 3000 kWh/m2 ergibt sich klar eine negative Energiebilanz.

Published in Wind and Solar

John Tjostem is emeritus professor of biology at Luther College in Iowa. This article on the relationship of energy to sustainability is very easy reading with powerful thinking.

Published in Several energy types

Fred Singer - Fossil fuels, coal, oil, and natural gas, are really solar energy stored up over millions of years of geologic history. These fuels have made possible the Industrial Revolution of the past three centuries, with huge advances in the living standard, and advances in science that have led to the development of sustainable, non-fossil-based sources of energy -- assuring availability of vital energy supplies far into the future. Energy based on nuclear fission has many of the same advantages: it emits no carbon dioxide (CO2) and is practically inexhaustible.

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