Except for third party materials and otherwise stated (see Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence), this content is made available under a
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Grateful acknowledgement is made to the following sources for permission to reproduce material in this course:
Figure 1c: Copyright © GeoScience Features Picture Library;
Figure 1a: NOAA;
Figure 2: NASA;
Figure 5: copyright © Tom Payne/Alamy;
Figures 7, 8b, 18c, 19c, 20b, 21b, 22b: Courtesy of Ruth Williams;
Figure 9: Courtesy of Linda Fowler;
Figure 11: Courtesy of Dr Elaine McPherson.
All other materials included in this course are derived from content originated at the Open University.
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