 It's 8 o'clock. This is CBS News on the Hour, sponsored by Progressive Insurance. I'm Heather Bosch. Work is underway to bring millions back online after a worldwide outage. CBS's Adriana Diaz explains. Microsoft estimates that 8.5 million computers running Windows were disabled by the tech outage. But tonight, countless hospitals, government agencies, and businesses, including airlines, are working overtime to get back online.