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Nature 400, 503-505 (5 August 1999) | doi:10.1038/22872
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Senior Executive- Finance Corporate Office
- Rhydburg Pharmaceuticals
- Selaqui-Dehradun India
Full-Professor of Heart and Thoracic Surgery (W3) (f / m)
- Friedrich-Schiller-University Jena
- Jena Germany
Palaeoecology A breath of fresh air
D. E. Canfield1
The Earth has not always been bathed in an oxygen-rich atmosphere. Models of the early atmosphere suggest that it was oxygen-free, and contained chemically reduced compounds such as carbon monoxide, hydrogen gas and possibly methane1.
- D. E. Canfield is at the Institute of Biology, Odense University, Campusvej 55, 5230 Odense M, Denmark.
e-mail: Email: dec@biology.ou.dk
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