Extended heat wave risks lives, increases fire danger and drought

The heat that baked the South earlier this week moved west under a so-called heat dome. More than 70 million people are under alert for life-threatening heat conditions. Jason Allen reports from Oklahoma City.

The heat that baked the South earlier this week moved west under a so-called heat dome. More than 70 million people are under alert for life-threatening heat conditions. Jason Allen reports from Oklahoma City.