Water consumption has tripled in the past 30 years and there’s a growing danger that disputes over the most necessary of resources could erupt into violence.
Many parts of the world, notably the Middle East, are running out of water to feed themselves. In response, a vast global trade is emerging. Not in water itself, but in thirsty crops like grains and sugar and cotton. Effectively the UK imports 45 cubic kilometres of water every year embodied in such crops â€“ much of it from poor and arid lands.