T he Vikings were great sailors and war- riors from Scandinavia (the region com- prising Denmark, Norway and Sweden), who swept across Europe and the North Atlantic over 1200 years ago. The Viking Age lasted from 800 to 1050 A.D. The Vikings wer…
Continue ReadingOne of the world's most famous mathematician Euclid was born about 325 BC in Alexandria, Egypt . He is often referred to as the father of Geometry. However, very little is known about the personal life of this famous personality except that he taught at P…
Continue ReadingSome of you have probably learnt the Pythagoras theorem in geometry. It states that the sum of the squares of the two sides of a right angled triangle is equal to the square of the hypotenuse. Well, this was discovered by the renowned mathematician and philos…
Continue ReadingHippocrates (460 BC-377 BC) was the most famous figure in Greek medicine and associated with the cult of Asclepius , the Greek god of healing. He was borne in Greece . After studying medicine under his father Heraclides, he seems to have spent most of his li…
Continue ReadingThe first fish appeared about 460 million years ago. They had no jaws. They fed on tiny animals that lay hidden in the mud with mouths that were simple openings. Gradually, fish developed jaws from the bony supports around their gills, called gill arches . J…
Continue ReadingAbout 65 million years ago, dinosaurs became extinct. Another group of animals called mammals began to appear. The earliest mammals evolved from reptiles, and were very small.. hardly bigger than a mouse. Mammals gave birth to babies and feed their young ones…
Continue ReadingIf you thought all dinosaur eggs were huge, you are in for a surprise. Many were surprisingly small-maybe about the size and shape of large potato. So baby dinosaurs must have been pretty small too when they were born. Some dinosaurs laid their eggs in strai…
Continue ReadingD inosaurs evolved from reptiles.However,they were different from reptiles in that their body was supported by their legs. Early reptiles had legs that stuck out sideways from their bodies.They dragged their bodies along the ground,and raised it only for brie…
Continue ReadingOur knowledge of the first animals comes from tracks left on seabed by worms.The first animal had soft bodies,which do not become fossils easily,so it is not easy to know much about them. The first animal-like organism was probably amoebas or another one-cell…
Continue ReadingPikaia was one of the most important of the early animals.It was small, and look like an eel. It belongs to a group of animals called chordates,which have a stiff rod running down their spine.Since human beings are also chordates,the pikaia could be one of ou…
Continue ReadingFirst life forms on earth were primitive,one-celled creature that appeared about 3 billion years ago.These single celled organisms began to evolve into multi-cellular organism. In time,the ocean began to fill up with different life formes. One of these was a …
Continue ReadingA fossil is the remains of an animal or plant that has been preserved in rock.When an animal died millions of years ago,its soft part rotted away quickly,but the bones and shell were scattered by scavenging animals.Some of the bone and shell were buried in mu…
Continue ReadingPrehistoric times are the time before history was recorded.They are divided into three periods. The oldest era was the Paleozoic era,in which fish,amphibians and reptiles appeared.Next came the Mesozoic era, which was the age of giant reptiles and dinosaur.Th…
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