http://fm.cnbc.com/applications/cnbc.com/staticcontent/img/cnbc-hdr-logo.pngBy . Australia is the world's most expensive destination for foreign students, but thanks to a weakening currency, the popular venue for education is set to become more affordable. According to a report from HSBC, Australia currently tops the rankings of the costliest nations for higher education, with annual expenses topping $38,000 a year. But that could change with the Australian currency tumbling more than 12 percent against the U.S. dollar this year. Read more...