Environtmental and Global Health

The climate has always varied, the problem of climate change is that in the last century the pace of these changes are abnormally accelerated to such an extent that affects and planetary life. In seeking the cause of this acceleration, scientists found that a direct relationship between global warming or climate change and increasing emissions of greenhouse gases (GHGs), caused primarily by industrialized societies.

A phenomenon of concern to the world: global warming and its direct impact, climate change, which occupies much of the efforts of the international scientific community to study and control it, because, they say, threatens the future of humanity.

Why so worried? Leading scientists agree that the increased concentration of greenhouse gases in Earth’s atmosphere is causing changes in climate. They also agree that emissions of greenhouse gases (GHGs) have been very intense since the Industrial Revolution, after which time the action of man over nature became intense.

Originally a natural phenomenon

The greenhouse effect is a natural phenomenon that enables life on Earth. It is caused by a series of gases in the atmosphere, causing some heat from the sun than our planet reflects trapping keeping global average temperature to +15 degrees Celsius, favorable to life, instead of -18 degrees Celsius, that would be harmful.

Thus, for many millions of years, the natural greenhouse effect kept the Earth’s climate to a relatively stable average temperature and allowed to develop life. Greenhouse gases retained the sun’s heat near the surface of the earth, helping the evaporation of surface water to form clouds, which return water to the Earth in a life cycle that had been kept in balance.

During about 160 thousand years the Earth had two periods when average global temperatures were about 5 degrees Celsius lower current. The change was slow, it took several thousand years out of the ice age. Now, however, concentrations of greenhouse gases in the atmosphere are rising rapidly, reflecting the world burn increasing amounts of fossil fuels and destroying forests and grasslands, which might otherwise absorb carbon dioxide and encouraging equilibrium temperature.

In response, the international scientific community has warned that if global development, population growth and energy consumption based on fossil fuels continues to increase at current rates, by 2050 carbon dioxide concentrations will double over to which he had before the Industrial Revolution. This could have disastrous consequences for the living planet.

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