Acknowledgements
Grateful acknowledgement is made to the following sources for permission to reproduce material in this course:
Except for third party materials and otherwise stated (see terms and conditions [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] ), this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
Course image: Malte Sörensen in Flickr made available under Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence.
Figure 1 Copyright © Corbis
Figure 4 Copyright © Alamy
Figure 6 (left) and 7 Copyright © BananaStock/Alamy
Figure 6 (right) and 12 Copyright © John Birdsall Photo Library
Copyright © Getty
Don't miss out:
If reading this text has inspired you to learn more, you may be interested in joining the millions of people who discover our free learning resources and qualifications by visiting The Open University - www.open.edu/ openlearn/ free-courses