Massive heat wave blamed for at least 6 deaths

A dangerous and deadly heat wave is gripping almost half of the nation. Tens of millions are set to broil in record-setting high temperatures this weekend, and heat advisories or warnings are in effect from the Midwest to much of the East Coast. Coupled with high humidity, the heat index will exceed 100 degrees in New York and other major cities. The heatwave is already blamed for at least six deaths. Natalie Brand reports.