The world's oldest trees

In this article:
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  • Conor Knighton
    American actor, television personality/producer

The twisting bristlecone pines that have taken root high atop the remote, rocky slopes of California's White Mountains are the longest-lived individual trees on the planet. Correspondent Conor Knighton looks into the secrets these trees can tell us about history, the climate, and our possible future.

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