Economic depression is world's top risk, says Towers Watson ranking

Economic depression remains the leading global economic risk, followed by the risk of sovereign default, according to Towers Watson's ranking of the top 15 extreme risks. The threat of hyperinflation follows in third place.

The ranking lists events that would have a high impact on global economic growth and asset returns if they occurred. The change of ranking reflects a change of view regarding both impact and likelihood of each individual risk.
   
Extreme risks: the 2011 update reflects the sl