Feature

Foolproof Hood Saves Welder’s Eyes

Seaweeds Form Great Rocks in North America

In Science Fields

Records Loads on Airplanes during Gusts in Bumpy Flight

Out of the White

Ancestry of the Alphabet Traced to New Source

[Photograph]: 200-Inch Telescope Model

Study Attitudes toward Communism and Fascism

Dr. Stanley’s Prize Research Described in His Own Words

New Theory of Atom by New A.A.A.S. President

Fatal Blood Clot Prevention Promised by Heparin

Border between the Living and Non-Living Is Now Erased