Environtmental and Global Health

Posts Tagged ‘Earth’

A river, lake or reservoir eutrophication suffer when their waters are richer in nutrients. It might seem at first glance it’s good that the waters are well packed with nutrients, because that could live easier living. But the situation is not so simple. The problem is that if there is excess nutrients plants grow in abundance and other agencies. Later, when they die, rot and fill the water smells and give it a foul, drastically reducing its quality.

The putrefaction process consumes large amounts of dissolved oxygen and water are no longer suitable for most living things. The end result is an ecosystem all but destroyed.

Eutrophic and oligotrophic water Read the rest of this entry »

Mengke Touming The glacier, one of the most beautiful in China and located in the northwestern province of Gansu, is melting the effect of climate change, reported the China Daily. ”

The Touming Mengke is the largest valley glacier in the Qilian Mountains in Sunan, but due to warming caused by greenhouse gases is suffering a reduction of six meters a year.

In the last five decades Touming Mengke, 10.1 km long and covers an area of 21.9 square kilometers, has been reduced by 300 meters.

Its maximum altitude is 5483 meters above sea level and the lowest is 4260 meters and is located in the valley Laohu, on the northern slope of the mountain Daxue, in the district of Subei. Read the rest of this entry »

So what makes an ordinary rain becomes acid rain? This happens when the acidity of rain falls in reaction to common air pollutants, primarily sulfur oxides and nitrogen oxides. So when the rain water comes into contact with human pollution of the atmosphere, forms sulfuric and nitric acids. So the rain becomes more acidic yet, with a pH below 3.

What causes it? Human pollutants such as noxious fumes long run factories and power plants as clean energy from coal, gas or petroleum products. Vehicles also emit harmful gases which contribute their grain to the general pollution.
History of Acid Rain Read the rest of this entry »

Aquatic and terrestrial animals, trees and plants and even human infrastructure suffer the damaging effects of acid rain. It’s the fault of human beings, which emits nitrogen oxide and sulfur dioxide from factories, power plants, cars, etc.

Da effects of acid rain can become devastating, since the acidification of rivers, lakes and seas hamper aquatic life, to wear and death of plant life in forests.

To make matters worse, when acid rain falls to the ground, dragging the acidified water with natural fertilizers of the land, thus giving a total poverty, ending stressing the plants, since they remove their minerals and essential ions , thus producing more carnage.

statue degraded by acid rain But not only affects living things, but corrodes buildings and human infrastructure. For example statues and monuments made of marble or limestone, dissolve with each acid rain. Read the rest of this entry »

Many people feel admiration for nature, respect. They are sensitive to the beauty of wild scenery, plants and animals. In this generosity, compassion, nothing to do with a utility that can be natural, seeing it as something far more important than “natural resources” for using, selling or eating. Of course we need to use natural, but not good considering it only as something used.

The sense that nature is far more than the things that take advantage of, to realize that the existence of human beings share with nature, it is proud to disperse knowledge. This knowledge allows to look silly for saying “first is the man.” We must be good, but we should also respect others.

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Earth’s atmospheric greenhouse effect associated with radiation processes going on inside. radiation is a form of energy, and is transmitted only in a vacuum.

Other forms of energy transmission in the natural environment are conduction and convection. In conduction heat spreads through the solid (propagation of heat from the surface soil to a lower level). In a fluid (gas and liquid) heat transfer by convection process through which a relatively warm part of the fluid, moving, and then mixed and integrated into a relatively cool environment.

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Air pollution is a mixture of solid particles and gases in the air. Emissions from cars, chemicals from factories, dust, pollen and fungal spores can be suspended as particles. Ozone, a gas, is a key component of air pollution in cities. When ozone air pollution is also called smoke.

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Almost all population growth over the next 30 years will take place in urban areas, indicating that urbanization is a phenomenon that shows no signs of disappearing.

This phenomenon affects issues such as water, environment, violence and injuries, communicable diseases and risk factors such as tobacco use, unhealthy diet, physical activity, harmful alcohol use and risks associated with disease outbreaks. Urbanization is a challenge for several reasons.

* Poor town who suffer disproportionately from many diseases and health problems, including increased risk of violence, and some chronic diseases such as tuberculosis and HIV / AIDS.

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In 1994 began the world’s conversion fierce field that brings destruction to millions of farmers and transferred control of power large multinational companies, whose only commitment is to make the land pay the most in the shortest possible time, destroying ecosystems, depleting and polluting natural resources and destroy the entire the village grew with “shock wave”.
From this year the selling price from the producers of staple crops for humans such as corn, wheat and rice have fallen dramatically, although this does not happen with the price we must pay the ultimate consumers of this product.

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Between 19 and 23 kilometers above the earth in the stratosphere, a thin layer of gas, the ozone layer, surrounds and protects the earth from harmful solar radiation. Ozone is produced by the effect of sunlight on oxygen and is the only substance in the atmosphere that can absorb the harmful ultraviolet radiation (UV-B) from the sun. This thin layer may make life on earth.

Since 1974, scientists have warned about the potential of the global crisis as a result of progressive damage to the ozone layer caused by the chemicals made by humans, such as chlorofluorocarbons (CFCs). The world needs too long to understand this early warning.

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