91热爆

John McCarthy looks at responsible tourism with journalist Catherine Mack who warns that our water footprint can be as significant as our carbon footprint as ground water is depleted to satisfy holiday activities from swimming pools to ski slopes. John also hears about responsible tourism in Cambodia from author Sue Guiney who returns there to run writing workshops and marine protection leader Pete Raines and citizen scientist Kirsty Brown who are helping map and preserve coral reefs.

Producer: Harry Parker.