Anyone unfortunate enough to have been caught by this year’s record-breaking UK floods might wonder how a lack of water could possibly be an imminent global problem. But away from our damp corner of the planet, things are rather different. Since 1950, the world’s population has doubled but the amount of fresh water available hasn’t actually budged at all. The result? According to the International Water Management Institute (IWMI), one-third of the world’s population is short of water. What’s worse, this is a point that the planet was not expected to reach, according to previous reports, until 2025, implying that the situation is deteriorating – fast
