<P>By January 2015 the world''s richest 80 people had as much wealth as the poorest 50 per cent of the world''s population. It is a global unevenness through which the barriers to in-migration of Third World migrants to wealthy First World nations go ever higher, while the barriers to travel in the reverse direction are all but extinct. </P><P>So how exactly does tourism contribute to narrowing this glaring inequality between the rich and poor? Are ever-expanding tourism markets a smoke-free, socioculturally sensitive form of human industrialisation? Is alternative tourism really a credible lever for reducing global inequality and eliminating poverty? </P><I><P>Tourism and Sustainability</I> critically explores the most significant universal geopolitical norms of the last half century - development, globalisation and sustainability - and through the lens of new forms of tourism demonstrates how we can better get to grips with the rapidly changing new global order. The fourth edition ha