"Control of water supplies gives strategic control over both cities and countryside.
Control of water supply is crucial", said Stephen.
We are seeing a battle for control of water.
Control of water resources in the Mosul area is one reason why people returned," said Machowski.
World War Three will be over control of water and food, and the insects may be an answer".
The spring melt leads to extensive flooding, which makes the control of water difficult.
The "water wars" were sparked by a government decision to hand over control of water supply to a foreign-owned, private consortium.
At Devils Gate — just above the Rose Bowl, in Pasadena — a dam was built in 1920 with control of water its only objective.
With proper control of water, the earth might support 10 billion people; it is now supporting two and a half billion.
Responding to this, readers raised interesting points about sanitation and neglected tropical diseases, population growth, and political control of water suppllies and budgets.
Ball, a writer and editor for Nature magazine, concludes with a caution about the problems of pollution and the control of water.
