Year by year we are learning that in this restless, strenuous American life of ours vacations are essential.

Geologists are rapidly becoming convinced that the mammals spread from their central Asian point of origin largely because of great variations in climate.

Nevertheless most of the evergreen forests of the north must always remain the home of wild animals and trappers, a backward region in which it is easy for a great fur company to maintain a practical monopoly.

Curiously enough man's body and his mind appear to differ in their climatic adaptations.

The human organism inherits so delicate an adjustment to climate that, in spite of man's boasted ability to live anywhere, the strain of the frozen North eliminates the more nervous and active types of mind.

The coast of British Columbia was one of the three chief centers of aboriginal America.

From first to last the civilization of America has been bound up with its physical environment.