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Lighter-than-air glider cruises tropical treetops

By Nancy Bazilchuk
April-June 2007 (Vol. 8, No. 2)

To sample the uppermost parts of the world's tropical canopies, researchers have tried alpine climbing techniques, construction cranes, powerful pesticides, and—when all else fails—the chainsaw.

Now Pro-Natura International, a private French research organization, has literally floated into the picture with an approach that draws on The Wizard of Oz. They've developed a cross between



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