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

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
The New Zealand Herald
The New Zealand Herald

Updated: 4:08pm, 28 Nov, 2017

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