What is plastic surgery?

    Plastic surgery is a surgical operation which is conducted to correct physical deformities in skin whether congenital or sustained in some accidents. This is done to remove the ugly spots from the face. The ugliness of the skin arising out of burns, cuts or small-pox can be removed by plastic surgery. Sometimes you must have noticed that the upper lip of a child is slit since birth. With the help of plastic surgery the soit portions...

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Why does ice float on water?

    It is a matter of common experience that ice floats on water. Howsoever large the size of ice may be, it will not sink. Even icebergs keep on floating in the sea. Do you know why ice floats on water?    The law of floatation of bodies was given by the Greek scienctist Archimedes. According to this law, whenever a body is placed in water, it is acted upon by two forces-the weight of the body acting downwards and the...

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Are ghosts and evil spirits a reality?

 Every race or religion has some degree of faith in the existence of ghosts and evil spirits. Quite frequently, newspapers publish stories throwing light on the existence of ghosts and evil spirits. Some people claim to have even seen them.    According to the Hindu religion-they are a separate species. After death, man may become a ghost or evil spirit depending upon the quanlity of his deeds in this world. They have no specific...

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Do ants also have their kingdoms?

    Do you know that the ants have their own world?-they also have cities and live in groups like us. They also have kings and queens and servant ants for doing various jobs. They have armies which are capable of facing the biggest of the big animals.    More than two thousand kinds of ants have been studied so far. The biggest ant is found in Africa. It is three inches in length. Ants live in groups. Their groups are...

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How does the owl see at night?

    There are all kinds of birds in the world and owl is one of them. what is peculiar about this bird is that it can see more clearly in the night than in the day. Its ears are also very sensitive. At night if there is a slighteset movement from any of its prey, it can detect and catch it very easily.Its legs have four claws with curved nails which specially facilitate it to seize its prey. Mice are its favourite food.  ...

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How does the tongue tell us the taste?

Man has five senses of perception-eyes, nose, ears, skin and tongue. The tongue tells the taste.    The tongue is located inside the mouth. It is narrow in the front side, while broader in the rear. It is an important muscle in the body. It is red in colour. If you examine it minutely, you will see granular lumps on its upper surface. They are called taste buds. These taste buds are composed of cells. There are hair-like fibres...

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