This is a brief summary of my research results in the field of historical-comparative linguistics and on the subject of language reconstruction. The main focus is on the scientific examination of proto-languages. In this paper, I want to pursue the question about the possibility of a genetic relationship between Proto-Indo-European and Proto-Uralic. It should be noted that since the 1990ies until today I have not found any convincing evidences for the Nostratic hypothesis. After a revision of my research results (2020) I came to the conclusion that at least there can be supplied evidences for a distant genetic relationship and for a common origin of the Proto-Indo-European and the Proto-Uralic language. Hamburg, October 10, 2020 Andrée Sophie Peterburs