Nitrogen, Threat or Benefaction? The Spectre at the Feast
The world today is a very different place from what it was in about 1900. It is a very different place from what it was even in the 1960s. This is not to say that the worries and preoccupations of 1900 and the 1960s have just disappeared. Rather, they still remain, but as a consequence of the activities of the Club of Rome and the many similar organisations that have arisen since then, people are much more conscious of them. The famous energy crisis of 1973, provoked by the rapid quadrupling of the price of oil, hardly a natural process, served to push such considerations to the fore. The simple questions that were once posed (such as “How shall we feed a growing population?”) have been joined to many others. Is there a limit to population growth beyond which the potential food supply will really be exceeded? Is there a limit beyond which the perturbation of the environment by human actions will produce changes that will irretrievably damage both people and the environment? Are there really limits to growth? What can we reasonably do that will not produce disaster? This is a far cry from the Victorian and even old-fashioned capitalistic and Soviet attitudes that seemed then and still seem to assume that humans, being at the pinnacle of evolution (or, alternatively, being placed at the pinnacle of animal life by God), were free to exploit Earth and its resources as much as seemed necessary. Even to attempt to answer such questions, it is necessary to understand what the current state of Earth and the environment really are, and this is not simply a matter of looking out of the window and making a snap judgement, or even looking out of several windows over a certain period. It is necessary to do serious research and then attempt to make sound judgements. This is no trivial matter because often there is little objective guidance as to what constitutes a sound judgement. The idea that human activities are upsetting the current equilibrium between people and the environment is based upon a misconception.