Ecology or Sustainability. What is the difference? In the last decades of the 20.century Ecology (1) was the buzzword in the public debate about the deplorable state of nature and the bleak outlook into the future. More and more people started to understand that the environmental decline is leading to a big problem. The nuclear threat, a conflict between the East and the West, with all the fall out, did nothing to pacify the people. And...

We all live in, what is called in German the Sachzwang. The dictionary translates it as Inherent necessity. I, personally prefer to call it the dictate of a situation. A situation which determines our actions. If one is not rich, one has to work. And even the rich person is not free from the Sachzwang, the wealth must be managed and increased. It was always like that, we were limited because of technologies not yet invented. Humans once...

The present era comes to an end, thanks to the perils of a probable Climate Change. The approaching era will inevitably be called the Ecological Era. But what does Ecology mean? Most people if asked, will mumble something about the Environment and that’s it. Others will recite the dictionary. Both will be right and still both are only partly true. The term ecology is derived from the ancient Greek word Oikos and means house or any...