Carbon offsets are instruments that may be acquired and sold to balance the GHG emissions generated by a person or a company. Preferably, we offset emissions when we cannot prevent them while executing our daily necessary activities. If one generates emissions in the presence of an alternate sustainable way, it is generally frowned upon by eco-conscious people. For simplicity, one carbon offset is measured as the reduction of one metric ton of CO2.

Numerous European countries have made nationwide legislations that allow firms to release up to a particular amount of emissions. If a firm releases over that set limit, it has to purchase carbon offsets to balance the equation. Apart from this compliance market, there’s also a growing market for voluntary purchase of offsets. Those who are eco-conscious buy offsets to reduce their personal carbon footprint even though they are not forced by law to do this. This voluntary acquisition, however, is not restricted to individuals, and several large firms too buy offsets to retain a low carbon footprint or to develop an environmental friendly image.

So that’s how the need for carbon offsets arises, either via legal regulations that in some way penalize businesses or because of growing consciousness in voluntary purchasers. Now how are carbon offsets ‘manufactured’? Offset providers take part in large scale projects that are designed to cut GHG emissions in even millions of metric tons, and as mentioned earlier, every metric ton of carbon dioxide lessened creates one carbon offset. These projects make certain that the overall emissions released on earth get reduced so the precise site of these projects is not a big concern.

This is easy to understand because GHG emissions generated in one nation influence the entire planet when they dissolve into thin air. Hence, a project cutting emissions in India can be used to offset emissions produced in the UK. This approach has become famous as cutting greenhouse gases in third world countries is mostly far cheaper than reducing the same volume of emissions in European countries.

There are many viewpoints for and against the system of carbon offsetting but those are beyond the scope of this introductory article. All in all, carbon offsets do play a role in decrease of greenhouse gases if generated by genuine projects and traded with full transparency.

The heat of the Earth makes up what is known as geothermal energy. When dust and gasses from Earth mixed together 4 billion years ago, geothermal energy resulted.

Inside the Earth at its core, some 4, 000 miles deep, the temperature is estimated at about 9,000 degrees Fahrenheit. Geothermal energy has been used throughout history for bathing, relaxing, cooking and heating. It was thought by some to have healing effects and was used to treat eye and skin diseases. The first geothermal generator that produced energy was built in Lardarello, Italy in 1904. The United States followed with their first attempt at geothermal power in 1912 at The Geysers in California. Today it is produced in twenty-one countries around the world.

Geothermal energy is located deep in the ground. The heat at the core of the Earth has an outward flow. As it moves, it is transferred to surrounding rock layers called the mantle. As temperatures and pressure increase, the rock melts and becomes magma. The magma moves toward the surface of the earth carrying the heat with it. If the magma reaches the Earth’s surface, it becomes lava. However, most of it stays below the Earth’s crust and heats rocks and water that surround it. These temperatures can reach up to 700 degrees Fahrenheit. When the water travels to the Earth’s surface, it becomes hot springs or geysers. Mostly it stays trapped in fractured, porous rocks called geothermal reservoirs. This heat near the Earth’s surface becomes a form of energy.

Hot water or steam from the reservoir exerts a force that can spin a turbine connected to a generator and produces electricity. The cooled water is then returned to the reservoir in order for it to reheat. Much exploration and testing needs to be done to determine where the geothermal underground waters are. When ideal spots are located, drilling is done to create production wells that bring the water to the Earth’s surface for power generation in geothermal power plants.

Although the costs to construct geothermal plants and geothermal wells are high, the cost of producing electricity is lower over time. The fuel is reliable, stable and does not need to be transported. The white smoke you will see over geothermal power plants is not smoke but rather steam. During the process of operations it may, however, bring some hazardous gases from underground.

The United States stands as the biggest producer of geothermal energy. Unfortunately, interest in it is low and it only accounts for about 1% of this country’s energy supply. Through research and experience new methods and technologies for accessing geothermal energy will improve. Tapping into the heat under the Earth’s surface can produce much more of the nations energy. We are at a point where renewable energy sources must make their way to the forefront of the energy picture. Not only are fossil fuels being depleted, but also they are ruining our air quality. In time, geothermal energy may become an appealing alternative. Competitive pricing and minimal environmental impact could produce a hot future for this renewable energy source.

See Edd, Tom & Matt save the Earth & then go to www.panda.org to Vote Earth. tve asked some of the world’s leading YouTubers to make films ahead of the Copenhagen climate change conference in December.

With people looking for more and more ways to find renewable energy sources, many don’t realize they are standing on top of one of the greatest energy resources on the planet. The Earth’s core is at an unbearable temperature, hotter than anyone could possibly even fathom. This heat builds up so much pressure in the Earth’s core that it has to be released in some way. These releases are known as geothermal energy. The hot water and steam from the Earth can be used in a number of ways to create energy. This is a renewable energy because the heat in the Earth’s core is constant and the water replenishes from rainfall.

There are different ways to use geothermal energy that include direct and indirect uses.

- The heat from the Earth could be used as a direct source for heating systems. The hot water close to the Earth’s system is directly pumped into heating systems.

- Generators in power plants require steam at very high temperatures to work. Geothermal power plants are built near reservoirs to tap the natural resource. The power plants use steam or water close to the surface to operate its generator.

- Geothermal heat pumps use water near the Earth’s surface to control building temperatures. This renewable energy source can regulate entire towns and villages.

Using geothermal energy isn’t a new concept. History has shown that people in ancient times have used hot springs for cooking, bathing and heating purposes. Even today many believe that natural hot springs have healing powers. There are many people who still bathe in hot springs. In Reykjavik, Iceland 95 percent of the buildings are heated with geothermal district heating systems. Hot water near the Earth’s surface is pumped directly into the buildings.

The Unites States is one of the leaders in geothermal power. The country has more geothermal power plants than any other, however, it only accounts for one percent of the electricity produced in the U.S. California (33), Nevada (15), Hawaii (1) and Utah (1) are the only states with geothermal power plants.

There are opponents of geothermal energy. While there are uses for it, criticisms have been raised. Some believe this is not a long term solution nor could it be used in huge environments. There are others who think creating geothermal power plants would cost too much money and drain money from researching other valuable energy resources. People are also concerned that if magma is tapped, it could bring up dangerous and harmful particles.

One thing is certain, more research is needed to make an educated conclusion about geothermal energy. There is too much guessing going on and not enough doing. There are results of natural geothermal reactions. These happen everywhere and come in the form of volcanoes, hot springs and geysers. With geothermal reactions occurring naturally, humans should find a safe way to tap into it.

After heating and cooling, water heating is typically the largest energy user in the home because it is necessary for so many domestic activities. Whether you are replacing a worn-out existing water heater or looking for the best model for a new house you are building, it pays to choose carefull

Here you can learn how to use the energy in your home more efficiently. You can also learn how to use renewable energy to provide your home with electricity, heating, cooling, and water heating.

Alternative energy from sources that do not produce harmful emissions. For example, unconventional power from the sun, wind or running water. In most boilers, wood, coal, oil or natural gas is burned in a firebox to make heat. Running through the fire box and above that hot fire are a series of pipes with water running through them. The heat energy is conducted into the metal pipes, heating the water in the pipes until it boils into steam. Water boils into steam at 212 degrees Fahrenheit or 100 degrees Celsius. Why waste this energy use it, don’t loose it.

If you currently have an electric water heater and natural gas is available in your area, a switch might save you a lot of money. Even though electric models have a higher energy factor than fuel-burning models, electric resistance is a very expensive way to generate heat. It does not have great environmental benefits either, since electricity is only as clean and efficient as the fuel (often coal) that generates it. Before you rule out electricity, though, check with your utility company. It may offer special off-peak rates or options for purchasing renewable power that may make electricity a more attractive option for you.

A renewable resource is fairly easy to replace. Renewable energy resources include wood, wind, sunshine, geothermal energy, biomass, and water stored behind dams in lakes and reservoirs. Electricity can be produced using several kinds of renewable resources.

From space, oceans look much different than adjacent land areas – they often appear darker, suggesting that they should be absorbing far more sunlight. But unlike dry land, water absorbs energy in a dynamic fashion. Some of the solar energy contacting the surface may be carried away by currents, some may go into producing water vapor, and some may penetrate the surface and be mixed meters deep into the water column. These factors combine to make the influence of the ocean surface an extremely complex and difficult phenomenon to predict.

Some countries give tax credits for the use of alternative renewable energy. In todays world we as a population should endevour to protect our environment and the use of alternative and renewable energy is a must do if we are to survive on this planet. For us not to consider the impacts of our enegy use would severely impact on the lives of those well into the future. So look after mother earth as she needs to be looked after and by using renewable resources we can limit our impact.

Many of us have some knowledge regarding “renewable energy”, some have concerns but the majority doesn’t know much. Here below are some very important things you should definitely know regarding this hot topic that may enlighten you for future decisions. A change in the way and methods to provide electric energy worldwide is becoming more and more widespread and urgent.

Clean vs not clean
As you may already know solar and wind power are two most diffuse renewable sources with an incredible and clean potential and with no damage for the environment and our lives. Traditional non-renewable sources such as coal and oil, on the other hand, are the most exploited and damaging power sources on the Earth with a huge impact on the environment and our lives. You may find interesting that only the 0.02% of the whole solar energy that reaches the surface of our planet would be enough to provide the energy we consume worldwide with no extraction or transport expenses.

Prices
In terms of money it may be true that coal and oil energy is cheaper in comparison with wind and solar energy but not in terms of lives. In fact studies have demonstrated that while 50,000 people a year -only in the United States- die for causes attributable to air pollution most of which is created by coal fueled power plants, no one dies for causes attributable to wind, solar or other renewable energy fueled power plants. So if one of the most advanced countries pays with the death of 50,000 people a year for its energy how much will other countries where the level of security is much lower pay? There is more, do you think that the life of “50,000″ people a year is worth the effort of trying to produce a bit more expensive (for now) but safe renewable energy? It has to be said that nowadays the prices for wind energy production have consistently dropped to the level where they can easily compete with traditional power production systems and solar energy’s technologies are in the perspective to cut 90% of the production prices by 2010 at no life cost.

The best renewable sources available
Indubitably the best renewable sources are wind and solar energy. And many are the reasons why we should say this: They are the most ancient energy sources available and since they influence our planet no damages have been caused. Human kind has already been using wind energy for at least 5,500 years for various reasons, and solar energy is vital for the whole ecosystem. Wind and solar energy ere constantly and widely spread, there is no need to mine or extract them, they are given to us for free Our global power consumption is a tiny fraction of their full potential They can easily be implemented in remote areas Best of all the pollution produced exploiting them is equal to 0

My hope is that now you have seen some of the benefits of renewable sources you’ll have a clearer vision and stronger consciousness on what renewable energy is and what it can do for us from now to years to come. There is much more to be said about this hot topic but it’s not possible to do so in a short article like this, anyway I would like to encourage you to do more research because every effort is worth.
In conclusion the free gift we have received with renewable sources is something that cannot be left behind or neglected anymore; it’s something that can make life better in a better world.