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28<br />
<strong>Max</strong> <strong>Born</strong> • Gustav <strong>Born</strong><br />
Fig. 52<br />
The increasing rates of change<br />
in human activity since the<br />
beginning of the Industrial<br />
Revolution. Significant increases<br />
in the rates of change occur<br />
around the 1950s in each case<br />
and illustrate how the past 50<br />
years have been a period of<br />
dramatic and unprecedented<br />
change in human history (from<br />
Crutzen, P. and Steffen, W.,<br />
(2003). Climatic Change, 61,<br />
251-257).