If you keep a sharp eye open as you drive the world’s lowest road, along the Israeli side of the Dead Sea, you may spot a short black line painted on a cliff face some feet above your head. It was made a century ago by British geographers, floating on a boat on the sea’s surface, to mark its level at the time.
But if you then turn, as I did this week, to look for the present-day sea, you’ll only spot it far beneath you, at the bottom of another cliff. For its level has since fallen by more than 80 feet, mainly over the past few decades.
At the same time the sea more here.