Skip to main content

Features

The Nerve Impulse

How do living things transmit electrical signals with equipment composed largely of water? Although there is disagreement on some features of the process, much has been learned about it

By Bernhard Katz

Sleep

The diurnal rhythm of man's life is significantly reflected in his physiology. To the physiologist the question of why we sleep is perhaps less interesting than why we stay awake

By Nathaniel Kleitman

Photographic Development

Although picture-making today is a highly refined art, chemists still do not fully understand the basic process whereby an image is formed and developed in an emulsion

By T. H. James

Is there an Infinity?

The great German mathematician Georg Cantor proved that, so far as mathematics is concerned, there is. Presenting a celebrated account of his ideas and their consequences

By Hans Hahn

A New Era in Polio Research

Until recently the virus that causes the disease was grown by the expensive and inconvenient procedure of inoculating monkeys with it. Now it can be cultivated in the test tube

By Joseph L. Melnick

"Client-Centered" Psychotherapy

In which a new approach to the treatment of troubled and neurotic people has led to an interesting series of objective studies in the effect of such treatment

By Carl R. Rogers

Departments

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format

Friends & Family Savings Event

Special 20% off most items on our site. Limited-time only!