Butterflies possess some of the most striking colour displays found in Nature. A butterfly’s rich colour can act as camouflage, mate attraction and warning signal. But what is it that makes the vivid colours of butterfly wings appear to dance? How can they possess such intense hues? Butterflies actually get their colours from two different

Earthquake comes under the category of natural disaster. Our earth has four layers—inner core, outer core, mantle and crust. Crust and mantle have covered the whole earth but not by its one piece of layer but having many of pieces called tectonic plates. These plates keep moving around and the edges of them are called

It will be really repetitive to say that weather changes because we all are known to it. Such change in weather takes place because of factors like heat, wind, moisture, etc. Process starts when the sun heats the earth’s surface in uneven manner. This happens because sunlight does not fall in the same manner on

While moving on the road, we leave things behind us at the speed we are moving. As we look up the sky, we see the moon following us even though we speed up and cross miles. This is mainly because the distance of the moon is approximately 240,000 miles and it being above us we

The solar system has now 8 planets and Saturn is one of them. Saturn is very special among them as it bears a ring-like structure on it. Such rings of saturn were firstly observed by Galileo in 1610 and, still, it is mystery that how actually such rings have formed. However, there are several predictions

Saliva is a liquid proteinaceous substance containing amylase enzyme and is produced by salivary glands under tongue. Because of amylase starch gets broken down into sugars and gets digested easily. A normal person produces up to 1.9 litres of saliva in a day but sometimes a person may face the situation where excessive saliva is

Bats are mammals that are born with wings. Because of their functions they have been unable to take much weight on their limbs. They are not strong to help them walk. Therefore, they lie upside down or hand themselves like that in caves. As they take up weight on their wings it also helps them

Actually, raining is not a single activity but it is actually a chain of activities. This process starts in warm days when sunshine heats up the ground and above it all. On being warm the air absorbs water from seas, river, pond, etc and goes up. On going higher and higher warm air gets very

Fruits do change their colours as they ripe to attract eaters and animals. Unripe fruits such as a green banana are bitter, raw and hard to chew where as the yellow ripened banana is tasty and sweet. Fruits change colours when their seeds are ready to be transported. Bright colours attract animals to eat fruits

Against the popular notion that the strong odour of the onion makes us shed tears but in reality, it is the gas released by an onion. An onion contains oils that have sulphur, which irritates not only our eyes but also our nose. When we cut an onion the gas from it known as propanethiol

Coffee contains caffeine, which helps us reduce drowsiness. Sleepiness or drowsiness is often chemically induced by adenosine that binds to its receptors in the brain and creates drowsiness. Caffeine is a chemical and it alters the chemical level of our brain making us feel aroused. Firstly, it stimulates up by rushing adrenaline in our blood

Different types of clouds can be largely seen in the sky due to the air pressure and the temperature of the sky. When the air is cold way up in the sky, the water droplets from which the clouds are formed condense and freeze. On the other hand, warm air makes these clouds to come

We perspire mainly to keep the body temperature at the level of 98.6 degrees Fahrenheit. The temperature of the human body is controlled by brain, which is the temperature control centre of the body. Since our body needs to burn around 2500 calories to run its basic internal mechanism each day, the releasing of energy