The impact of the new biology on ethics.

The classical ways to make philosophy are used to discuss ethical problems applied according to some fundamental ethical principles whose paradigm still remains the kantian categorical imperative. Nowadays, such approach is contested because the problem of "conditio humana" have to take into account scientifically and technical changes. The consequence is that ethics cannot be separated from the actual scientific context, especially from the modern biology developments. The present article discusses the concept of nature. If according to Antique acceptation nature means "what man hasn't done", nowadays, conception is that human being creates nature by his own work, he interferes the life structure, even his very life. By this interference man determines his own essence and always tries to redefine himself. That's why, ethics couldn't exist without anthropology, i.e. without basic assumptions about human nature and couldn't exist without the knowledge of the circumstances in which man lives. But nowadays, these circumstances are mainly determined by science. The modern biology generates discussions on the concept of human nature, that's why the necessity of bioethics as applied ethics and, especially, in its determination as ethics of the responsibility. On the other hand, the debate on ethical problems of the biology is today extended beyond bioethics, in the direction of an "ecological ethics".