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Scientists Show Where Roots Get Air to Breathe

Drowning out Rice-Field Weeds

New Instrument May Locate Old Tombs

Mosquitoes Thrive in Warm Weather

Yellow Fever Now Making Last Stend

Will Urge Faster Mapping of World

Hay Digesting Germ Found in Human Body

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Danish Explorer Describes Ancient Culture of Eskimo

Trick Chair Tests Fear Reactions