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Recent reports have shown a dramatic loss in insect species and biomass. Since forensic entomology relies on the presence of insects, the question is whether this decline effects the discipline. The present review confirms that numerous studies document insect population declines or even extinction, despite the fact that the rates of decline and the methods used to demonstrate it are still much debated. However, with regard to a decline in necrophagous insects, there is little or only anecdotal data available. A hypothetical decrease in species diversity and population density in necrophagous insects could lead to a delayed colonization of dead bodies and a modified succession pattern due to the disappearance or new occurrence of species or their altered seasonality. Climate change as one of the drivers of insect decline will probably also have an impact on necrophagous insects and forensic entomology, leading to reduced flight and oviposition activity, modified growth rates and, therefore, an over- or underestimation of a minimum postmortem interval. Global warming with increased temperature and extreme weather requires a better understanding about necrophagous insect responses to environmental variations. Here, transgeneration effects in particular should be analysed in greater depth as this will help to understand rapid adaptation and plasticity in insects of forensic importance.
The main Question of this paper is: how can we tackle the global warming in accordance with the economical growth especially in emerging countries?
K. W. Kapp, “The Social Costs of Private Enterprise” (1950), defines the social costs as direct or indirect damages which are not compensated by the producer, but added to the third parties. An example might be the disaster of the BP plant in April 2010, in which the polluter can hardly cover all the damages so as to make the seawater clean, to regenerate the harmed natural lives and to recover the jobs and the everyday life of the residents on site.
The Club of Rome, “The Limits to Growth” (1972), makes us aware of the five conditions which set the limits to growth: population, industrialization, pollution, consumption of food and natural resources, which tendentiously increase in a exponential progression. The GDP growth 10% a year means that it will be 2.59 times as large in ten years, whereas technology could resolve problematic concerning five elements at highest in arithmetical progression.
Remarkable would be that the modern industrial civilization has brought social damages in form of global warming. Developed nations have not payed for it yet. All the people in the world should have right to economical growth at any rate, which would however be limited by those five conditions. Conclusion: the developed nations should give up the consumption lifestyle for the sake of equal right of every citizen in the world to reasonable standard of living.