Ingo Sasgen, a PhD student from GeoForschungsZentrum Potsdam, was invited for a short-time visit to report about the GRACE gravity field solutions released recently by GFZ in Potsdam and CSR in Austin (Texas, USA). His seminar talk showed how to obtain information about postglacial rebound and present-day ice-mass changes over Antarctica from GRACE gravity models, and how to compare this information with modeling of these effects.