Mark Lasseigne fills you in on what's happening on Wall Street.

-Wall Street falls sharply as investors worry Europe's debt crisis is spiraling out of control.
-The Dow Jones Industrial Average drops 151 points to 12,506
-Financial stocks led the S&P 500 lower as investors worried over Europe's implications for the banking sector.
-The materials and energy sectors, viewed as riskier holdings, also fell sharply.