Part 1 of a three-part look at the impact of the demand for fresh water on global affairs. Included: water-rights disputes among the countries that share the Nile River Basin in Africa; the fight to control large rivers in Asia.
How climate change will affect the world's water supply; and how competition for water will influence international relations, migration patterns and governments. Included: glaciologists on the changes occurring in Asia and Europe from glaciers melting; the global consequences if Greenland's ice caps melt.
Conclusion. Water-transfer methods are examined. Included: an Egyptian plan to create an artificial Nile lake to irrigate the Sahara; a Russian plan to build canals to bring water to central Asia; a system in South America that guarantees Brazil and Argentina a reliable source of water.