Brendan Buckley, Earth Institute at Columbia University (IMAGE)

Columbia Climate School

Brendan Buckley, Earth Institute at Columbia University

Caption

Tree-ring scientist Brendan Buckley of Columbia University's Lamont-Doherty Earth Observatory extracts a core of wood from an ancient fokienia hodginsii tree in Bidoup Nuiba National Park, Vietnam.

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Kevin Krajick/Earth Institute, Columbia University

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