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Researcher measuring nitrous oxide emissions on Kurungnakh Island in the Lena Delta, Siberia.

Researcher measuring nitrous oxide emissions on Kurungnakh Island in the Lena Delta, Siberia. Photographer: Johanna Kerttula

Researcher measuring nitrous oxide emissions on Kurungnakh Island in the Lena Delta, Siberia. — Researcher measuring nitrous oxide emissions on Kurungnakh Island in the Lena Delta, Siberia. Photographer: Johanna Kerttula

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