Abstract
A characteristic feature of the 21st century is that every important thing is invisible: boundaries, technological risk, global warming, etc. In Eco-ethica, a new ethics in contrast to Aristotle’s Nicomachean Ethics must be developed with respect to these invisible realities. What should we do to demolish the nuclear facilities at Fukushima? This is a question of “technica negativa”, the invisible process of demolition. The problem must be examined through ethics, Kant’s legal thinking and, finally, politics. Habermas’ idea of “solidarity” is fruitful here because he insists on civic democracy at a transnational scale. This idea may be linked to a new form of cosmopolitanism.