I’m in the process of reading an extraordinary issue of National Geographic. It’s a special issue titled “Water: Our Thirsty World.” This is not a happy topic, given the increasing desperation of increasingly thirsty human populations.  Many of them haul their water long distances on their backs.  But most of the victims of dwindling supplies of fresh water are not human beings.

National Geographic has offered a series of video overviews of this special issue.  This is a critically important issue that is well worth your attention.