The European debt crisis continues as Greece's government remains unstable and Italy's borrowing costs rise sharply. While Greece has received bailouts, it is running out of money and time. Italy's rising bond yields suggest investors are losing faith in its ability to pay debts, and Italy is a much larger economy than Greece. High debt levels worldwide continue to cause market volatility until reduced to more manageable levels. Recent data shows that U.S. government bonds outperformed stocks over the past 30 years for the first time since the Civil War, though low current bond yields mean they cannot provide the same returns going forward. History shows there are no guarantees in investing and the appropriate asset class depends on economic conditions.