Karaka leaves have helped scientists reveal a 250-year shift in CO2 levels in New Zealand's atmosphere. Photo: NZ Herald

Leaves collected on Captain Cook’s 1769 voyage show CO2 shift in New Zealand’s atmosphere

Density and porousness from 250-year-old leaves compared with the current samples of same species

Topic |   New Zealand

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Karaka leaves have helped scientists reveal a 250-year shift in CO2 levels in New Zealand's atmosphere. Photo: NZ Herald
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