Tracking Elusive Narwhals in the Arctic

Part 1: These creatures known as the "unicorns of the sea" are threatened by climate change.

08/21/2012

Transcript for Tracking Elusive Narwhals in the Arctic

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ABC News Live

Oklahoma Tornado: Survival and Hope; Search and Recovery; Shocking Images

Oklahoma Tornado: Stories of Survival and Hope

Families reunited after a monster tornado leveled Moore, Okla., killing at least 24 people.

Oklahoma Tornado: Search and Recovery

How neighbors in Moore, Okla., made it through the worst case scenario

Oklahoma Tornado: Shocking Images After the Storm

Photographers captured now iconic images of rescues and devastation.

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