CBS Evening News: Dow Plunges Again, Closes Down More Than 1,000 Points

U.S. stocks tumbled again after huge swings earlier this week. On Thursday, the Dow lost more than 1,000 points. CBS News business analyst Jill Schlesinger explains what's behind the volatility.

U.S. stocks tumbled again after huge swings earlier this week. On Thursday, the Dow lost more than 1,000 points. Here's my latest appearance on the CBS Evening News with Jeff Glor to help explain what's behind the volatility.