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The problems of
the atmosphere, the ecological disasters,
the deforestation, the extinction
of species, the contamination of the
cities are some of the great problems
that the Earth undergoes. The increasing
deterioration of environment is reason
for preoccupation not only for the
scientists who take care of the subject
but for all the men. In spite of the
important technological changes reached
in the last decades, the man has not
become independent from the nature
yet.
For that reason
a change of mentality is necessary,
with the purpose of resisting the
present process of contamination and
destruction of the existing resources.
So that the human beings can become
aware from the problem, they must
know and be informed on the polluting
actions that come from their habitual
activity, and, on the other hand,
all the persons from their place in
the society must contribute, at least
with small actions in the daily life,
to diminish the deterioration. Therefore
it will be possible to obtain the
respect and the preservation of the
biological diversity and arrive at
a sustainable and equitable development.
An intelligent
advantage
Petroleum, coal
and gas, used power sources until
now, come from the ground, they are
not renewable resources and cause
a high degree of contamination. At
industrial level leave the use of
these fuels can be difficult and expensive,
- in some cases-, although sooner
or later its shortage will impose
the forced search of renewable and
less polluting power sources. Meanwhile
the commitment can begin in each individual
with the use of bicycles, that do
not contaminate, like means of transport,
or cars that use gasoline without
lead, or electrical cars - still in
experimentation-. In the public transport,
the trains and subterraneans constitute
a good substitute of the transport
means that use fuels, because for
its operation they need electrical
energy, that is a less polluting agent.
In the developed
countries the wind is taken advantage
to produce electrical energy. The
cost of a wind mill is not cheap but
the advantage that offers in windy
zones validates the investment. In
the Patagonia, in the south end of
South America, where bursts blow that
surpass 100 km/h, the advantage of
the aeolian energy is not developed,
even though it would constitute an
excellent alternative.
At domestic level
are many the contributions that can
be done, from small daily actions,
as the saving of energy and water,
the use of biodegradable detergents
and aerosols that do not damage the
ozone layer, etc. to the education
of the children generating in them
the habit to make use of the planet
in a rational way, so that future
generations can enjoy it.
To recycle
The difficulties
for the elimination of the domiciliary
and industrial remainders can be surpassed
with the generalization of the concept
of recycling. To recycle means to
return to use raw material and previously
discarded elements, to produce other
new ones. That task allows a sensible
diminution of the remainders, simultaneously
that saves enormous amounts of water
and energy. In developed countries,
the process is facilitated with the
selective harvesting of the sweepings.
The paper, the glass and other materials
are easily recyclables.
However, it would
be advisable to limit the use of plastic
packages that are not the new auto-degradables
polymers and tin plate packages -
at the moment, in fact, of aluminium-
since the production of this material
is expensive and polluting, and generates
high water consumption.
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