Tourism is a major source of income for many countries - but the money comes at a price. Every year millions of tourists pollute the planet while trying to see distant places - from the planes they use to get to their destinations to the copious amounts of water they consume, the litter they leave laying around and the eco-sensitive areas they trample.
Co-authored by Jeremy Smith and Richard Hammond, Clean Breaks: 500 New Ways to See the World, is your guide to eco-friendly travel, teaching tourists how to keep green while seeing the world. Paul Ash from talked to Jeremy about the book:
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