sound without wires. In 1885 the German scientist Hertz made a machine that produced radio waves and a receiver which could detect them from distance the radio. Soon after that the makers of the first radio realized that it could also be used for `broadcasting'messages for information or entertainment. Regular radio bradcasting had first started in the United States in 1921. It was immediately popular. New radio stations mushroomed. Journalism is one of the most importnant professions. It informs citizens about events is the community, the nation, and the world. The reports of journalists also help people form opinions about current affairs. Every day, journalists throughout the world gather, write and edit material for thousands of news stories. Local reporters, for example, cover school board meetings, fires, sports events and other local stories. Other journalists, including foreign correspondents cover
wheel. Furthermore, as communication was channelized, rising horizons of the world led to the imperative need to express oneself. As the need arose, man seized the use of pictures and paintings for self-expression, which later developed the concept of writing. With the need for writing evolved the need for a substance to write on. Rocks, parchments, and leaves were initially used, but they were not satisfactory. With the passage of time, paper was first invented in China and later mushroomed in the rest of the world. The above inventions were worth mentioning to interpret the fact that how man moulded himself in accordance with his needs. As the need arose, man came up with new ideas, new thoughts, and forcefully pushed his mind to run on that particular line of action. Even in the modern era, man has been found to observe the same behavioral patterns. Some years ago, TB and cancer
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