The greatest problem of present day world is the pollution of environment, be it water, air or sound.
Pollution literally means fouling the natural environment by some unnatural elements which make it polluted to the extent that it becomes unhealthy for plant and animal life.
Man has damaged the earth gradually over the years and this damage cannot be reversed, we are now trying to stop any more damage being caused to the environment.
Conservation work is going on across the country and this is helping to preserve the wildlife and countryside that we have left.
The problem intensifies with the addition of pollutants in our waterways from any sources; radioactive wastes from factories, laboratories and hospitals; fallout from nuclear explosions domestic wastes from the cities and towns, chemical wastes from factories and industrial units, etc.
Persons with a higher DDT content in their fatty tissue are afflicted with brain tumor, higher blood pressure and malfunctioning of the liver.
Researchers are already underway for devising new methods to control environmental pollution and protect the environment.
In India, the department of Environment and Prevention and Control of Pollution boards, working at national and State levels, have enacted several laws to protect the environment and stop its further degradation.
Man has caused many far-reaching effects on the environment over the years.
Global warming, pollution and the damage to the ozone layer are a few of the major things that can be heard about in the news.