Climate interactions: this 1974 summary of feedbacks was a pioneering
attempt to show the complexity of the system. Nowhere did biology appear
explicitly...

... whereas a mid-1980s "wiring diagram" put biology in
the center. An extract is below; the whole diagram can be seen by clicking
here.

Upper: Partly inspired by a private
communication from W.D. Sellers. Reproduced with permission from W.W.
Kellogg and S.H. Schneider, Science 186 (1974),
p. 1164, copyright © 1974 American
Association for the Advancement of Science. Lower: H.J. Schellnhuber,
Nature 402 suppl. (1999) p. C21, redrawn from
Arthur Fisher, Mosaic 19 (1988), pp. 56-57.
All material on this page copyright ©
2003 American Institute of Physics.
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