Pizza was first cooked in the kitchens of Naples, Italy, about 500 years ago. No one person created it. It was just something a lot of people ate around Naples. The Duke of Naples made Pizza popular by adding a variety of toppings. Without cheese and tomato sauce toppings, Pizza is just plain crusty dough.

Yes. On all normal skin, good soap cleanses by combining with water to make a lather which penetrates the pores and roots out the dirt. Perfumed soaps can, however, cause allergies. Soap is made of fats and alkalis and the best soap contains rather less alkali and has special antiseptics which help to rid the skin of harmful bacteria. Good …

Madras eye is the inflammation of the outermost covering of the eyeball and inner layer of eyelid. Medically, it is known as ‘conjunctivitis’. It can be caused by various agents like bacteria, virus, wind, smoke, pollen, radiation or chemical agents. If a person comes in close physical contact of the infected person or his infected belongings, the bacteria or virus …

The main ingredient in hair gels is a plastic called PVP, which is a polymer sealer. The polymers in PVP are dissolved in water or alcohol and form a clear film between each hair strand, attaching them to one another. Chemical experts call this “capillary power” because it’s similar to how blood capillaries work. When gel is applied to wet …

The leaves of the nettle are covered with tiny, fine hairs. When you touch a leaf, the point of the hair pricks your skin. A poison is squeezed up the hair from a tiny sac at its base, and gets into the would. This is what causes the stinging pain-and makes you avoid stinging nettles in future!

Your brain contains memory centres where millions of old memories are stored away in an orderly manner according to subjects: music you have heard, places you have seen, and tastes and smells you have experienced. Because of this orderly arrangement, it is possible for one section of a person’s brain to be damaged or destroyed without harming the other sections. …

If you know the functions of tools such as scissors, forks, nutcrackers, and grinders, you will understand how marvellously specialized your teeth are. Although your 20 primary or baby teeth first appeared when you were about six months old, you permanent teeth (32) started to grow out when you were about six or seven years old. The rest will appear …

A pearl is created when a piece of grit lodges in the shell. The shellfish covers the grit with a layer of shell lining known as mother-of-pearl, or nacre. The pearl that is formed removes the irritating grit.

‘Size zero’ was first used in 1966 for British supermodel Twiggy, who had a fragile figure. Now, ‘size zero’ is a women’s clothing size in the US system, equivalent to a UK size 4, with a waist measurement of 23 inches, the average girth of an 8-year-old girl. It is a petite size for women with a 32-inch bust, 23-inch …

When you were born, sometimes a mole or nevus appeared on your skin. This is called a “birthmark” because it was present at birth. Moles are soft, dark, raised spots that can appear on almost any part of the body. They can differ from each other in what they are made of. Some moles consist of tissues from vessels; others …