Climate changes are a major threat to human life. In this connection, submission of a complaint in the case Cláudia Agostinho against Portugal and 32 other states to the European Court of Human Rights in Strasbourg is no surprise, especially as a number of such complaints have been raised against governments worldwide recently. This paper discusses the complaint in detail and attempts to answer some of the questions raised, such as, will the Strasbourg Court find the complaint reasonable and, if so, will it address treaties on climate changes when interpreting the Convention for the protection of human rights and fundamental freedoms?