Mechanical Shock-Troops of the Blitzkrieg

Bombers Plus Battleships

Both Are Needed For Coordinated Effort

Aircraft Versus Warships

Helldivers

Describing the Technique of Dive Bombing, Conceived for United States Naval Use

Smokeless, Flashless

New U. S. Powders Don't Betray Gun Positions

Propeller Cuffs

Sikorsky's Helicopter

Aviation Editor, Scientific American. In charge, Daniel Guggenheim School of Aeronautics, New York University

Geriatrics

The Newest Medical Specialty Deals with the Aging, Now that the Elderly Increase

Steadily Better, Roto

Three Decades of Science and Child Mortality

How Big Does the Mood Look?

In Which it Turns Out that Astronomy Has Something to Learn from Psychology

When You Steer a Motor-Car

Mechanism Has been Designed to Indicate Steering Deviations When Car is Rolling

Carbon Dioxide on Wheels

Industrial Plants and Military Airports Are Using Mobile Units Carrying Fire Killing Gas

Nylon, Turbine Shafts, and more

The Evanescent Mesotron

With Knowledge Incomplete, Science Strives to Account for some Puzzling Phenomena

Spectro Photometer, Hygrometer, and more

Roots are Pumps

Research Shows Capillary Attraction Has Little To Do With Sap Circulation

Business and Changing Climates

Are Slow Climatic Changes the Basic, Underlying Cause of Economic Cycles?

Turkey Steaks, Niagara Bridge, and more