March 21, 2011

Global Warming

"With public sentiment nothing can fail; without it nothing can succeed. Consequently, he who molds public sentiment goes deeper than he who enacts statutes than he who enacts or pronounces decisions." Abraham Lincoln.

People exist always only in combination with nature, they can not be separated from it by any means and thus any kind of changes either positive or negative are always reflected in our lives. Long time ago one of the main problems on the planet became the global climate change. The Artic ice starts to melt and disappear, Latin America and South America suffer from lethal storms and floods.

Europeans have to face melting glaciers, forest fires and heat waves. The tree rings and ancient coral in ice cores show that the world has not been as warm before as it is now.

The warmest years were all starting since 1998. Most of these changes are influenced by human activities, as people burn the nature's stores of coal, oil and natural gas. As a result billions of tones of carbon dioxide come into the air annually. Some scientists even suppose that these changes were caused by the dawn of agriculture.

The well known phenomenon connected with global warming is greenhouse effect. CO2 is a greenhouse gas that makes the obstacle for the Sun radiation in the troposphere, the lower atmosphere. Some researches also show that cosmic rays are also connected with this effect.

As soon as the atmospheric CO2 rises the global temperatures are luckily to rise by around 2C to 5 C. As a result the ice starts to melt, changes in clouds and vegetation occur and so on. When the glaciers melt, they will certainly cause some rivers to overflow, while others will be emptied. The situations with water resources might cause conflicts in different regions.

All this will of course influence the natural ecosystems, as not all species can move quickly enough to put up with the global warming, for example coral reefs. The melting ices will influence not only the level of rivers' water, but also the level of the oceans is disturbed.

And if the level of the ocean rises 6 meters higher, that would be enough to flood the lands of billions of people.

Forests and oceans on our planet were able to absorb about half of the CO2 people produced, but since 2001 the amount of CO2 is twice bigger, which really limits the resources of the nature.

Methane is the second most important gas for greenhouse effect. The effect of methane is even 20 times greater than carbon dioxide, but there is less methane in the atmosphere. Methane influences 25% of global warming. Methane is produced by cows and termites. Thus agriculture and rice growing can produce methane. Besides coal mining and oil wells also produce methane. The level of methane in the atmosphere is constantly increasing – this is also an alarming fact for the Earth climate.

Public Health organizations are also worried about global warming, as researches state that the global warming is luckily to increase human mortality, when the cases of diseases transmitted by mosquitoes and other