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How Can We Correct Crooked Teeth?
Smile! A smile actually brightens up your entire face and is the most striking part of your face. But sometimes you are ashamed to smile. Why? Because you have buckteeth? Your teeth are crooked, stained? Have you seen some kids with a mouthful of metal? These are called braces. Today, doctors can work wonders with your teeth. They can straighten your teeth and put a sparkle on it. All this without dentures, mind you! Just as you go to a doctor with an upset stomach or an eye doctor to test your eyes, your teeth also requires attention and care....
How do Nails Grow?
Put your hands face down and look at the fingernails on your hand. Are they long or short? Dirty? Covered with polish? And the nails on your toes? Are they tearing up your socks? When my nails do that to my socks I know that it is time to get hold of a nail trimmer to cut them down to size. Meanwhile, my sister wants to show hers off. So she spends hours every day polishing her nails endlessly....
How do Animals Communicate?
Humans have invented new and advanced ways of communicating with each other. Television, radio, telephones and of course email. You will be surprised to know that animals who seem to have very simple methods of communication – using their bodies and voices – are also capable of long distance communication. How do Animals Communicate? [Illustration by Shinod AP] Foot stomping and low frequency rumbling created by elephants can travel upto 20 miles and is used by elephants to signal other herds or members, says an article in the Hindu newspaper....
How Bad is the Sting of a Scorpion?
Ever seen a scorpion scurrying across with two crab-like claws and its tail high in the air? Well this tail is what has to be watched out for! The zing in the scorpion is in its tail for it has a sting. Scorpions are poisonous animals. They are arthropods belonging to the class Arachnida and are relatives of the spiders and ticks. Though they are considered creatures of the desert, you can find them in most climates, hot or cold....
How Did Santa Claus Originate?
Its nearly midnight and with a jingle of bells a sled comes streaking from the north, pulled of course by Rudolph, the red-nosed reindeer. Sitting in the sled is a jolly round red robed figure with flowing white beard and a bag slung over his shoulder that lands on the rooftop with a merry ho-ho-ho. Hey! Its Christmas and its Santa Claus. If you’ve been nice, he slides down the chimney and loads up little stockings hung there with lots of toys and goodies....
How do Houseflies Spread Diseases?
The housefly (musca domestica) is one of the most common of all insects. It is a major health hazard, particularly in parts of the world where sanitary conditions are poor. The housefly has a dull gray, bristled body that is about 7 mm in length. It has large reddish compound eyes. Its mouth cannot bite but consists of a spongy pad. It has a peculiar system of feeding itself. At first it releases saliva and digestive juices over food and then sponges up the resulting solution....
How does the Army Post Office System Work?
It’s the one thing every soldier away from home looks forward to: mail. So everyday it is ‘Hey, Mister Postman, look and see, if there is a letter for me’? For a solider in his outpost, the letter from a loved one is his most cherished and valued document, read and re-read a million times till the next one arrives. The soldiers in the Indian defence forces are from every nook and cranny of India – from Kashmir in the North to Kanyakumari in the South from Tawang in the state of Arunachal Pradesh in the East, to Porbandar in the State of Gujarat in the West....
How Did Advertising Start in India?
The first newspaper in India was brought out by an Englishman James Augustus Hickey in 1780 who was stationed at Calcutta. The paper was brought out on Saturdays and was first called the Calcutta General Advertiser or Hickey’s Bengal Gazette. Publishing a newspaper is an expensive business as Hickey realised to his cost. He was losing money faster than the newspapers came out of the printing press. To make ends meet, Hickey decided to take on advertisements or ads....
How Many Kinds of Rhinos are There?
A modern day rhino or rhinoceros looks pretty much like its ancestor that existed on earth more than 30 million years ago. Its status as an animal “biggie” hasn’t changed much either. The ancestors of the modern-day rhinoceros – the 4 feet tall Uintatherium and the 15 feet high Indricotherium – were the largest land mammals ever. Today’s rhino is the largest living land mammal, after the African elephant, in terms of size and weight....
How do Ducks Stay in Water and not Get Wet?
When you get out of the swimming pool or bathtub, you are soaking wet. Had you been a duck, you would be swimming in water and yet not look really wet. It sounds crazy, but it’s true. The secret lies in the layer of smooth feathers, which keeps the water out and also helps the duck float. Moreover, these smart ducks make a kind of oil, which they spread on their feathers with their beaks. And since oil and water do not mix, the water just rolls off their bodies....