What do wasps feed on? Wasps, ants and bees belong to the same group of insects. It is the mother wasp which hunts for food. Young wasps are picky eaters. Spiders, flies, beetles etc. are favourites. Most of them need living food. The mother wasp...
Why is our blood red in colour? Red blood corpuscles give blood its red colour. There are about 35 billion of them in our body. Red blood cells live for about four months after which they are broken up usually in the spleen. New red...
Is the porpoise a mammal? Porpoises belong to the dolphin family. Like dolphins and whales, they are also mammals. They belong to the order cetacean. Porpoises give birth to live babies and the babies are fed with the mother’s milk. They also breathe air through...
What is a toucan? A toucan is an odd-looking tropical American bird. Its bill is larger than its head giving it an ungainly appearance. In some, the bill is one third the length of the entire bird. The bill looks like a lobster claw and...
What makes blood clot? If our blood failed to clot after an injury we would die of excessive bleeding. Clotting is a natural mechanism to protect us from this danger. Clotting is made possible by a substance called fibrin. Threads of fibrin hold the blood...
Who found the first dinosaur bones? Discoveries of dinosaur bones were made hundreds of years ago. Georges Cuvier in 1822 held that they belonged to giant reptiles. William Buckland named the first dinosaur, Megalosaurus, meaning big lizard, in 1824. It was in 1842, that they...
What is Wall Street? Wall Street is, in a literal sense, a street in New York City. The major financial institutions of the United States are located here. Wall Street denotes the entire financial district which extends many blocks north and south of the street...
What was an acropolis? An acropolis was actually a fort. In ancient times, Greek city-states comprised a walled city with an acropolis and an agora. The latter was a huge open space for meetings and markets. With the passage of time, the acropolis became a...
Is epilepsy a disease? During the Middle Ages, people who had epilepsy were believed to be mad. Epilepsy is a disease that affects the nervous system. Epileptic people suffer from sudden fits or convulsions. They may lose consciousness and become comatose too. Epilepsy is caused...
What is forestry? Forestry is the science of caring for forests. England passed laws about the cutting down of forests more than four centuries ago. Forests are very essential for our survival. For every tree that is cut down another must be planted. Forests provide...
