Two medium-intensity earthquakes hit the Andaman and Nicobar archipelago within a span of less than two hours today, the Indian Meteorological Department said here.According to the National Centre for Seismology, an earthquake with a magnitude of 4.7 on the Richter scale hit the Andaman Islands at 6.19 pm, followed by another at 8:05 pm.The second earthquake had a … [Read more...] about Twin earthquakes hit Andaman Islands within two hours