Electricity, radium and the spitting of the atom are among the most important modern discoveries. These discoveries have resulted in such modern inventions as the electric train, and jet plane, the spaceship, the radio, television, radar-screen and nuclear weapons. All these have completely changed our lives.

The field of medicine, too, has seen many wonderful discoveries and inventions. The X-ray, the heart-transplant, the antibiotics, corneal grafting and so on have been solving many health problems.

Stainless steel, plastics and man-made fibres have greatly improved and beautified our homes. Every branch of science can show discoveries and inventions of importance to us. But nuclear weapons are a great daner to man and his civilization. The world must forget its petty quarrels. It must become one. We must unite, or we shall perish.