Around 7,600 years ago, the emergence of agricultural settlements in Southeastern Europe and subsequent progress of civilization suddenly came to a standstill. This was most likely caused by an abrupt sea level rise in the northern Aegean Sea. Researchers of the Senckenberg Biodiversity and Climate Research Centre, the Goethe University in Frankfurt and the University of Toronto have now detected evidence of this oceanographic event and an earlier sudden sea-level rise in the fossils of tiny calcifying marine algae preserved in seafloor sediments in the Aegean Sea. The impact of these events on historical societal development emphasizes the potential economic and social consequences of a future rise in sea levels due to global climate change, the researchers write in the study recently published in the journal Scientific Reports.