Many years ago people lived in harmony with the environment because industry
was not much developed. Now the situation is quite different. People all over
the world cannot ignore the problem of the protection of the environment
because of modem industry and the need for energy. Newspapers and magazines
write a lot about water pollution, air pollution and land pollution. There are
some laws and decisions on this important question. There are state
organisations and international conventions which pay much attention to this
Many parts of the world are crowded now, much of our waste, especially waste
from factories, electric power stations, the chemical industry and heavy
industry are very dangerous. Fish dies in the lakes, rivers and seas, forest
trees die too.
The problem of radiation has also become a very important problem because it
is very dangerous for health of people. There is a science, named ecology,
which study the relation between people and their environment. But each of us
also must do everything possible to keep our environment clean for ourselves
and for the next generations.