It is possible that robots may begin to perform some surgical operations on people. The robot would be directed with great precision by a computer working from pictures of the inside of the patient’s body taken with scanners. The computer would be controlled by human surgeons, who would check the progress of the operation on video screens. Robot surgery could …

We think of robots as perfect machines that never do anything wrong, let alone get hurt. However, there are some robots whose whole purpose is to get hurt and to say ‘ouch’. These robots are dummy patients for dentists. They have a model human head, and student dentists practise doing fillings and other kinds of dental work on the robot’s …

It is possible that people will be born in space and live their whole lives there. These space people will be human beings who have left Earth to live in space colonies. The colonies will be gigantic spacecraft, many kilometers across, in which there could be whole cities, together with fields and lakes. The colonies would grow their own food …

We hear a lot about ‘test-tube’ babies. These babies are not, in fact, born in a test-tube, but they do begin life in one. Medicine can sometimes help people who cannot have children. Normally, a new life begins in the mother’s womb when a sperm cell from the father fertilizes an egg cell from the mother. The two cells fuse …

Bats are not blind. Like many animals, they are born blind, but gain eyesight from the time they are seven to nine days old. Bats are night creatures. They come out only at night to hunt. Although they can see reasonably well they have no special eyesight possessed by other night creatures like the cats and owls. Instead, bats fly …

Amazing facts about animals — A captive, great brown bear of Alaska, a close relative of the fabled grizzly bear, weigh about 650 kilograms! The female Emperor penguin comes to the land, lays one egg on bare ice, then immediately returns to the ocean. The male keeps the egg warm for two months until it hatches, by rolling it onto …

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 …

The human body contains about 48 liters of water. But this body fluid is not pure water. It is actually a salt solution. Why is this so. According to one scientific theory, all land animals, including man, are descendants of organisms that once lived in the sea water, and when they left life in their body fluid. Thus, the body …

Rishyashringa, son of Vibhandaka sage was brought up in wilderness and knew no human beings except his father. The childless king Dasharatha was advised by sage Vasishtha to invite Rishyashringa, known for his spiritual powers to the city of Ayodhya, to perform a special sacrifice for obtaining sons under his supervision. Accordingly teams of dancing girls were sent to the …

Cows are very valuable animals to human beings. They give us milk, from which we make butter and cheese. The commonest dairy (milk-giving) cows are Friesians. Europeans drink an average of nearly 31 (5pt) of milk per week each.