New joint project started (MPISOC/MPIDR/Population Europe) - On the edge of societies: New vulnerable populations, emerging challenges for social policies, and future demands for social innovation. The experience of the Baltic Sea States In the near future, Europe will face new challenges related to the consequences of demographic change. Because population ageing is inevitable in most European states due to long-term population trends, social and health policies are increasingly focusing on the circumstances and effects of longer lives, e.g. with regard to promoting active and healthy ageing,