Ancient Mariners and the Spread of Early Civilization

How Can We Produce Scientific Workers?

Malaria and the Mosquito Fish

A Plan to Exterminate Malaria by Means of a Fish that Eats Malaria-carrying Mosquitos

Acoustical Research in Auditoriums

By Making a Scientific Study of Rooms Having Bad Acoustics It Is Often Possible to Eliminate Echos

Is Anti-aircraft Artillery Overtaking the Airplane?

An Answer to Those Who Fear the Danger of Invasion from the Air

The Great Outer Planets

Jupiter and Saturn Have Hot Centers and Frigid Exteriors

Tut-Ankh-Amen's Golden Coffins, the Work of Ancient Egypt's Most Skilled Artisians

Radio Whirlpools in the Ether

Modern Broadcasting Plants Charge the Air With Powerful Electric Streams

Old Problems and New Methods in Prehistory

The Relations Between the Physical and Cultural Evolution of Ancient Man

A Diamond Quest in California

Cherokee Mine, Once One of the Richest Gold Producers, May Now Become a Diamond Mine

Interesting Air Stamps and Historic Cancellations

Horsepower from the Tides

Proposal to Develop Half a Million Horsepower at the Bay of Fundy

A Way to Conserve Our Valuable Timber Supply

How Industrial Wood Preservation May Help to Save Our Fast Disappearing Forests

Western City Ends Flood Menace

Moving a River Half a Mile Across the City of Pueblo

An Underground Moving Picture Theatre

A Novel Method of Providing Entertainment and Instruction for Miners and Their Families

Fossils in Architecture

Nature Faking

Popular, Fallacies Have Grown Out of Pseudo-Scientific Nature Lore

From the Scrap-book of Science--Camera Shots of Scientific Happenings