En route to his next destination, Lonely Planet founder Tony Wheeler looks at the world's biggest business: travel.

An unashamed travel addict, Wheeler writes about the joys of escaping home, satiating wanderlust, and why the bird's-eye view from the window seat is best.

Confronting travel's great tensions-employment, income and connection versus overcrowding and cultural damage-he comes down on the side of 'pack and go'.