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Nature 439, xiii (26 January 2006) | doi:10.1038/7075xiiib; Published online 25 January 2006

Abstractions

While pondering how erosion shapes landscapes, William Dietrich and his graduate student Taylor Perron realized that many models used by Earth scientists to explain the phenomenon are missing something: life. The models tend to be mechanistic and don't take into account biological factors.

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