Students use their books to protect their heads during an earthquake drill inside a classroom at the Paranaque National High School in Baclaran, Paranaque city, metro Manila Feb 22, 2011. A mild quake, recorded at magnitude 4.7 with a depth of 116km (72 miles) northwest of Batangas, shook the Philippine capital Manila on Tuesday but did not cause any damage, a Philippines Institute of Volcanology and Seismology (PHILVOCS) official reported.[Photo/Agencies] |