A glass half empty

摘要

Can the world solve its water problems? There is no reason in logic, physics or hydrogeology why it should not be able to do so. Most of the obstacles are political, although some are cultural, and none is helped by water's astonishing ability to repel or defy economic analysis.rnMany of the small solutions are known. Some involve physical remedies. Flood protection demands embankments, or dams, or protected flood plains, or houses that rise and fall with the waters.