Deadly heat wave causes cooling concerns at schools across U.S.

A late-season heat wave is hitting the U.S. as the World Meteorological Organization announced that this summer broke the record for the highest temperatures ever officially documented. Nationwide, schools are struggling to keep up with the unusually high temperature as kids are returning to classrooms. CBS News' Christina Ruffini reports from Washington.

Deadly heat wave causes cooling concerns at schools across U.S.
A late-season heat wave is hitting the U.S. as the World Meteorological Organization announced that this summer broke the record for the highest temperatures ever officially documented. Nationwide, schools are struggling to keep up with the unusually high temperature as kids are returning to classrooms. CBS News' Christina Ruffini reports from Washington.