His group claims the ability to identify electromagnetic signals that are precursors to earthquakes. They suggest the precursors are generated by electricity from piezo-stimulated effects in rocks being stressed just prior to the earthquake rupture. Onassis Foundation Laureate for the Environment (1995). Also awarded by the Academy of Athens (1978) and Empeirikion Foundation (1986). In 2016 the Union of Greek Physicists honoured him for his work with a prize delivered by the President of Greece.