It is shocking that the recent Ludian earthquake in Yunnan province caused a death toll of 617 persons as of press time.Every year it seems the earth is suffering from more frequent,and more damaging,natural catastrophes.From the Tsunami in southeastern Asia that rendered tranquil beach heavens into horrifying landscapes of debris,and within hours devoured the lives of 300,000 tourists and residents ten years ago.To Hurricane Katrina in New Orleans,USA that took 1,833 lives and caused more than 100 billion US dollars of damages in 2005.The earthquake that buried near 70,000 lives in Wenchuan,Sichuan province,China in 2008.The 286 people who died and the 68 billion lost by Hurricane Sandy in 2012……