Youri F. Cormier

Here’s a fact I had never considered­: the word “rival” comes from the Latin word rivalis­, meaning “those who draw water from the same source.” Rivalry is closely related to the availability of shared resources, and tensions are easily triggered when food and water are at stake.

Now, let’s take this to the extreme: climate change projections suggest that the flow of many of the world’s major rivers will be seriously reduced as glaciers retreat. The scale of potential conflict is staggering. ...