Rémy Bossu, Secretary-General of the European-Mediterranean Siesmological Centre, said “days, or perhaps, weeks” would be needed to evaluate the unusual tremors but said that the series of quakes typically occur in the build-up to a larger tremor. A state of emergency has been declared in the idyllic Greek island of Santorini amid a series of near-constant tremors in recent days, which have almost emptied the famous Greek tourist haven of visitors and residents. The largest tremor so far was recorded on Wednesday evening, when a quake with a magnitude of 5.2 coursed through the island. It was the first to...