Man is very proud of his speed. After all, don't we zoom through space faster than sound itself can travel? Don't we fly across oceans in a few hours? What man should really be proud of in these cases is his brain, which has enabled him to develop mach...

The world is so bright with color everywhere we turn that it's hard to imagine that other creatures don't see it as we do. But how can we find out whether animals can see color when they can't tell us?

Scientists have made many experiments to get t...

If you have a pet, such as a cat or a dog, you may become so attached to it that in time you almost feel it's "human." That is, you begin to think it can express the way it feels in terms of human emotions, such as crying, or perhaps even laughing.

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If we mean can animals communicate with each other, that is, pass on certain messages by signs and sounds, the answer is yes. If we mean can they talk to' each other as we do, the answer is no.

Even among human beings, all communication is...

Hypnotism is a fascinating subject to many people. We see astonishing things being done when it is performed on other people, and from time to time we even read about hypnotism being used by doctors to help patients.

When a perso...

The chief purpose of an anesthetic is to control pain. attempting to find ways to do this since ancient times.

A medical book written in the first century A.D. describes sleep-pro­ducing drugs, and we know such drugs were used in the Orient even befor...

As you probably know from the appeals being made for funds to fight cancer, and from all the research that is being done on this subject-cancer is a great menace to the health and life of mankind. We will only discuss cancer in general terms, so you can have an idea of what h...

Nowadays we see advertising everywhere for cigarettes that talks about their having "less tars and nicotine." What is nicotine? Why people concerned with how much there are is in cigarettes or 'cigars?

People who smoke get a great deal of -satisfaction fro...

A living organism such as the body has the power itself to resist and overcome infections. This is known as "immunity."

The body has to be helped to acquire this immunity. In the case of many diseases produced by viruses, immunity is created by a person's h...

Measles is a disease that occurs in every part of the world and didn't originate in any particular country. German measles is quite distinct from real measles, and has a different effect on the body

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Measles is generally a childhood disease, but grown-ups wh...