What’s killing Yosemite’s trees?

What’s killing Yosemite’s trees?
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Ten years ago researchers in California launched a different scientific mission to trace the life histories of about a of the oldest and tallest trees within the field.

The first decade has already viewed dramatic adjustments within the wooded subject, with fire and drought taking their toll. The BBC’s Peter Bowes stories.

Filmed and edited by Colleen Hagerty.


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