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How Mental Ability Varies with Age and Race

Human Mind Resists New Ideas

Diseases Blamed for Hair-Trigger Tempers

Urges Cooperation in Science as in Industry

Auto Tire Forced Rubber Research

Hybridization of Man and Ape to Be Attempted in Africa

Earth Built of Wedges New Geological Theory

Greater Tornado Damage Seen as Population Increases

New World Made for Plants at Boyce Thompson Institute

Doctors’ Charges Change with Medical Progress

Intelligent Students Show Most Speed