Abstract
As in no other age of human history, the beginning of the 21st Century faces challenges in which both the human race and the planet Earth are at stake. The main note of these challenges is its planetary scope, what leads Ulrich Beck to define our society as a World Risk Society. According to Beck, the problems faced by the World Risk Society can only corne to an end through an effort of international cooperation in political institutions and through a new interpretation of the concept of cosmopolitanism as an element of a new political culture. In this article, we intend to expose the way Beck approaches the concept of Cosmopolitanism suited to the reality of the 21st Century’s challenges.