newly-published report on global wealth says that for   first time, Asia has more dollar billionaires than   USA. According to   Global Rich List 2013 from   research institute Hurun, there were 1,453 people whose personal worth was $1 billion or more at   end of January. Asia had 608 billionaires, compared with 440 in   USA and 324 in Europe. Moscow came top of   list of billionaire capitals of   world with 76 of   world's mega-rich; New York, Hong Kong, Beijing and London followed.   world's wealthiest person is Mexican telecom tycoon Carlos Slim, who has $66 billion. He is followed by US investor Warren Buffett and Amancio Ortega, boss of   fashion brand Zara.  report's author, Luxembourg accountant Rupert Hoogewerf, believes there are   lot more billionaires in   world. He said that for every billionaire he found, he probably missed another two. This means it might be more accurate to say there are 4,000 billionaires living   life of luxury. Mr Hoogewerf also believes that   number of wealthy Chinese will continue to rise as more business leaders target worldwide markets. He said: "Chinese entrepreneurs are preparing their international expansion plans. It is   very new concept but growing very fast."   report says the youngest billionaire is Facebook founder Mark Zuckerberg, 28, who is 42nd on   list and has   personal fortune of $17 billion.