Many people believe that we have obligations with respect to future generations concerning the state of the environment that we pass on to them. Apart from the practical problem of people not really acting on such beliefs, there are also conceptual or philosophical issues that make these obligations problematic. The so-called non-identity problem is especially difficult: depending on which courses of action we adopt, different people will be born in the future, which means that even future people who due to our behavior will live under fairly poor circumstances might not have any ground for complaint. Had we not behaved as we did, they would not even have existed. It is argued here that, at least within a rights-theoretical approach, the non-identity problem can be solved by moving from considering individual rights to generational rights, rights which future generations hold qua generations.