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Ancient Trade Routes Traced by Amber Finds

Tests for Color Blindness Should Be More Severe

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Lung Cancer Increases

Germ Theory of Cancer Refuted

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Removal of One Idea Would Collapse Civilization, Millikan Says

Many Have Immunity to Infantile Paralysis

Diabetes Patients De-Vitaminized

London Zoo Has White Elephant

Sugar May Help Resist Infection of Joints

How Atom Shudder Creates Light Called Deepest Mystery