This free course was written by a team led by Alison Fox and Clare Lee.
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.
The material acknowledged below is Proprietary and used under licence (not subject to Creative Commons Licence). Grateful acknowledgement is made to the following sources for permission to reproduce material in this free course:
Figure 1: 'People. Lots of them...' (Anhangabau Subway Station, Line 3 - Red, Sao Paulo, Brazil) © Diego Torres Silvestre. This file is licensed under the Creative Commons Attribution Licence http://creativecommons.org/licenses/by/2.0/
Figure 2: Taiwan population pyramids © Chen-Pan Liao via Wikimedia. https://commons.wikimedia.org/wiki/File:Taiwan-population-pyramid-1980.svg / https://en.wikipedia.org/wiki/File:Taiwan-population-pyramid-2014.svg This file is licenced under the Creative Commons CC0 1.0 Universal (CC0 1.0) Public Domain Dedication licence https://creativecommons.org/publicdomain/zero/1.0/deed.en
Figure 3: 'Crowd' © James Cridland via Flickr. Crowd by James Cridland CC BY 2.0. This file is licenced under the Creative Commons Attribution 2.0 Generic licence https://creativecommons.org/licenses/by/2.0/
Every effort has been made to contact copyright owners. If any have been inadvertently overlooked, the publishers will be pleased to make the necessary arrangements at the first opportunity.
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.