Bärbel Hönisch, Earth Institute at Columbia University (1 of 2) (IMAGE)

Columbia Climate School

Bärbel Hönisch, Earth Institute at Columbia University (1 of 2)

Caption

This is Bärbel Hönisch with a mass spectrometer used to measure boron isotopes to reconstruct past CO2.

Credit

Lamont-Doherty Earth Observatory

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