Topicality of the study lies in the fact that modern rationality as a significant achievement of civilization is simultaneously becoming a real threat to the mankind.Science, undertaking a humanistic mission, at the same time dehumanizes what it was aimed at: the system of values, education and culture.Acquired knowledge is often used to destroy the environment and humanity, and not for progress and well-being.Disruption of the harmony of natural, social and spiritual, underestimation of the anthropocentric dimension of scientific rationality put Homo (...) sapiens on the brink of being.Recently, in philosophical and social thought, the problem of the ways of forming a new humanistic world attitude and humanistically oriented science and ethical rationality has acquired particular urgency. Analysisoftheliterature. Scientific works of foreign and native authors, who began the study of this problem, are used:R. Andryukaitene, V. Vernadsky, M. Vishnevsky, V. Voronkova, J. Habermas, A. Gritsanov, I. Kasavin, A. Kornienko, K. Korsak, A. Lazarevich, V. Lectorkog, A. Mercier, R. Nugaev, V. Ratnikov, O. Sosnin, V. Stepin, J. Nikitina, M. Ratz, N. Reimers, A. Tolstoukhov, O. Tsira, V. Shvyrev, V. Shuper. Purposeofthearticle –philosophical understanding of the new rationality as a factor in the formation of a coevolution-innovation strategy for themodern world development. Theobjectiveofthestudy isananalysis of the essence of rationality, the characteristics of its main features and role in the formation of a coevolution-innovation strategy for the sustainable development of the mankind. The methodology of the study is based on an interdisciplinary approach, integrates modern practices of philosophy, philosophy of science, epistemology, ecology, ethics and axiology.Comprehension the complex problems of the rational / irrational, evolution / co-evolution, crisis / sustainable development dichotomy and their influence on the humanization of scientific knowledge was encouraged by the principles of historicism and global evolutionism, the dialectical method, methods of abstraction, generalization and conceptualization,as well as the methodology and principles of synergetics. The conclusions : The article studies the essence of rationality and the limitations of its current concept, the causes and features of the crisis of rational awareness of the modern world, due to the dehumanizing role of scientific and technological progress.It justifies the thesis that the situation can be changed by giving the scientific progress of the humanistic direction, forming the anthropocentric dimension of scientific rationality.Humanity must resolve an issue of rationality from the position of the humanistic world outlook and create a new model of science. The basis for solving this problem may be the modern understanding of humanism, which, in turn, will serve as the basis for the emergence of a new type of rationality.It is the rationality based on humanism ethics that can become the core of the co-evolution and innovation strategy for the sustainable development of mankind. Study findings are that it is humanistic rationality, based on co-evolutionary and innovative ethics, that provides global society as a system with a high level of stability regarding the destructive impact of crises,the formation of an innovative orientation, taking into account the need to bridge the potentially dangerous gap between modern civilizations – the scientific, technological and social humanistic ones. (shrink)