JANUARY 3, 2023
What do the Sahara Desert and Paris’ 16th arrondissement have in common? Both are located above a somewhat unusual water table: when you dig a hole in it, the water gushes out all on its own! The economists Hubert Stahn and Agnes Tomini examine this astonishing geological phenomenon in which the number of open wells does not impact the quantity of water in the water table, but rather the pressure that compresses its volume.
