Environment: Icebergs for the Desert

Over the years, the idea of using Antarctic icebergs as a source of fresh water has been widely ridiculed by scientists. Now, however, the scheme has won some prestigious support; a Government report describes it as "both technologically feasible and economically attractive."

The authors of the report are Wilford Weeks of the U.S. Army Cold Regions Research Laboratory and William Campbell of the U.S. Geological Survey. They envision "supertugs," perhaps nuclear-powered, hauling 20-mile-long islands of ice from the Antarctic* to parched coastal regions of South America and Australia. They calculate that as...

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