Flu Crisis: 48 Hours in Boston's Flu Outbreak

'Nightline' spent two days in the packed hospitals of a city suffering from a widespread illness.

01/14/2013

Tornados in Oklahoma destroy homes, schools, hospitals and leave dozens dead.

Tornado Outbreak: Destruction in the Heartland

The Midwest has suffered from three straight days of tornado activity.

Massive Tornado Devastates Oklahoma City Area, Dozens Killed

Elementary schools, homes and hospitals were destroyed in the monster twister's wake.

Oklahoma Tornado: Search and Recovery

Oklahoma Lt. Gov. Todd Lamb gives "Nightline" the latest on rescue efforts in Moore, Okla.

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