Feature

Bright Brains Grow Until Twenty

Solving the Riddle of Insulin

Sun Burn Rays of Sun Growing Stronger

Old-Fashioned Treatment Has Unexpected Results

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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