PerspectiveAtmospheric Science

Fungi, Weathering, and the Emergence of Animals

Science  10 Mar 2006:
Vol. 311, Issue 5766, pp. 1386-1387
DOI: 10.1126/science.1124183

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A billion years separated the advent of one-celled eukaryotes from that of multicellular animals. This rise of the animals may have been triggered by increases in atmospheric oxygen resulting from mineral weathering accelerated by ancient soil biota.