Does human harmed the earth or make it a better place to live (2)

Does human harmed the Earth or make it a better place to live?
I believe that the earth is being harmed by human activity even
though we live more convenient than before. For centuries,
people keeping on changing their natural environment to have
better life. However, all these make great damages to the Earth.
The most obvious damage is the decreasing of the forests. In
china, many areas in mountains and are used for farming lands.
Lots of trees are cut down for building. The
result is deserts occupy more place in north, while there are more
floods in south in summer. The second damage is the pollution.
Specifically in large cities, factories and automobiles make air full
of dust and mist. Even in midnight I can hear the noise of car
running on the way. I remember when I was a little girl the river is
so clear that we children often jumped into it after class. But now it
is so dirty that nobody wants to touch it. We often miss the blue sky,
beautiful river, flourish trees and flowers. How pity it is if we can
only find them in dreams.
Some might argue people have made great progresses in the modern
society. One can travel the entire world in several days by taking
airplane. Mother can hear her son`s voice by telephone and fell free
about his health who worked faraway. Yet, natural, the most
beautiful and magical thing in the world, is damaged as a cost of all
the modern technologies.
In sum, I concur that we should cherish our environments. Changing
our life is important, but be care for mountains, lakes, forests where
we live with everyday.