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Financial markets across the world have continued to experience serious volatility amid a worsening debt crisis in Europe sparked by the downgrading of Greece's massive debt to junk status.

Athens has asked the European Union and IMF for more than $50bn to help bail the country out of its economic problems.  

Many analysts fear the crisis could trigger the downfall of other vulnerable economies in the eurozone.

Jonah Hull reports.

Source: Al Jazeera