Multiple tremors near Greek island of Santorini shut schools and put residents on edge

A series of earthquakes near the Greek island of Santorini have led authorities to shut down schools, dispatch rescue teams with sniffer dogs and sent instructions to residents including a request to drain their swimming pools. Even though earthquake experts say the more than 200 tremors that have hit the area since early Friday are not related to the volcano in Santorini, which once produced one of the biggest eruptions in human history, locals are on edge. The strongest earthquake recorded was magnitude 4.6 at 3:55 p.m. Sunday. Officials decided to close schools Monday on the island of Santorini as well as nearby Amorgos, Anafi and Ios as a precaution.