Archive | Environment

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Massive glacier in sub-Antarctic island shrinks by a fifth

Posted on 25 July 2009 by admin

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One of the biggest glaciers in the southern hemisphere shrivelled by a fifth in 40 years.

The Cook glacier on Kerguelen, an island in France’s southern Indian Ocean territories, covered 501 square kilometres (193 square miles) in 1963.

Combining satellite images with other data, glaciologists from the Laboratory for Studying Geophysics and Space Oceanography estimate the glacier lost an average of nearly 1.5 metres (4.9 feet) in height each year by 2003, shedding almost 22 percent of its original volume.

In terms of area, the glacier shrank by 1.9 sq. kms. (0.74 sq. miles) per year from 1963 to 1991.

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The Green House Effect

Posted on 25 July 2009 by admin

The process know as the greenhouse effect earns its description from a comparison between the temperature of air inside a greenhouse compared to the air outside. Known to many as global warming, its is one of the most frightening man made phenomena of the 21st century. At the end of 2006, scientists confirm that the average temperature of the planet has shown an increase of up to 1 C every year for the last five. This increase had proved beneficial for just a few regions in the World especially those of higher latitude.

However, the negative impacts of the greenhouse effect on the World’s climate change are being observed already through the overall effect in constant annual temperature increases.

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Hybrid Cars

Posted on 25 July 2009 by admin

Hybrid car is an automobile that uses a combination of at least two unlike fuel sources for its impulsion. Even though many combinations can be possible, normally when people are discussing about hybrid cars, they are referring to cars with the combination of either an electric motor, or a gasoline engine, or a battery that influences the electric motor and stores energy for future use.

Due to effective use of technology, hybrid cars develop much higher gas mileage than any other vehicle. In fact hybrid cars stands at the top spot for the most fuel economy car in their relevant categories; compact cars, two-seaters and mid size cars.

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Global Warming

Posted on 25 July 2009 by admin

The term Global warming refers to the gradual rise in the earth’s temperature. Global warming has been an environmental issue that has plagued the entire globe for a few years now and researchers have said that the global warming will cause a complete change on the planet, with the same catastrophic effects as the ice age. Small effects can be seen already in the North and South Poles, where the ice bergs are beginning to melt. There is also evidence of the sea levels rising in certain areas.

Global warming has been directly attributed to the hole in the ozone layer which is causing the heating up of the earth’s atmosphere from the sun. This is commonly referred to as the greenhouse effect. It is said that if the hole in the ozone layer continues to grow, global warming could accelerate quite dramatically. This is why many countries have come together and signed agreements to cut down on fuel emissions into the atmosphere and use various other forms of energy that are safe for the ozone layer.

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Alternative Sources of Energy

Posted on 25 July 2009 by admin

The field of Alternative and renewable sources of energy is full with diverse sources and resources, all of which are replete with manifold promise and potential. One of these is the source of Biofuels,which are produced by converting organic matter into fuel instead of discarding them simply as waste matter. This includes the use of ethanol and derivatives of plants such as soybean, sugar cane, vegetable and corn oils. Of course, it is an important alternative to the current fossil fuels we all rely intently upon-still, all ethanol products are not usable as an alternative energy source. Still, statistics from the International Energy Agency (IEA) postulate that by 2025, up to 10 % and by 2050, up to 30% of the world’s energy needs (in terms of being used mostly as gasoline) can be met by ethanol as compared to 2% being met today.

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Alternative Power

Posted on 25 July 2009 by admin

Alternative power was used for the first time in 1920, during electric vehicles and steam-powered capitulated to the internal combustion engine. An actual image is starting to appear on alternative power systems for the coming years. Millions of dollars have been spent for development of alternative power and still in developing new means of vehicle impulsion, that too with good reason. The automobile industry is underneath an increasing pressure to cut down pollution by developing eco-friendly cars.

Hybrid automobiles, which use electric motors and gas or diesel engines, also are being created with some positive outcomes. But hybrids are more expected to serve as a connection from one technology to the other.

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