Wind is also a preferable from renewable resource. Basically, wind is the moving form of air we breathe. Scientifically speaking, it is caused by the uneven heating of earth’s surface by the Sun. The absorbing potential of heat by wind varies at different altitudes.

The phenomenon of winds is very simple and depends on the air pressure above the surface. During the day land picks up the heat faster than water. The air above it heats up quickly than air above water. As a result, it expands and moves up. The cooler air from surrounding rushes to take its place creating the winds and the vice-versa happens during the night as the air above the land cools faster than water.

In present times, wind is generally used for generating electricity. It is a renewable source of energy due to the fact that the wind will until the sun shines.

Since olden times, people have controlled the wind energy. More than 5,000 years ago, the early Egyptians used wind to sail ships on the Nile River. Soon after, people erected windmills to mill wheat and other grains. The earliest known windmills were in Persia (Iran). Centuries later, the natives of Holland enhanced the central plan of the windmill. Holland is famed for its windmills.

Similar to old-fashioned windmills, nowadays, wind machines employ blades to save the wind’s kinetic energy. Windmills work since they slow down the velocity of the wind. The wind gush over the airfoil fashioned blades causing lift like effect and in turn causing them to rotate. The blades are attached to a drive tube that turns an electric generator to generate electricity.

The course of producing electricity by wind turbines is the opposite of a moving fan in a house that use electricity and revolves the blades causing air to move. Wind turbines are driven by the strength of moving wind invading on a set of blades and the generator turns the mechanical energy into electricity.

Categorically, there are two kinds of wind-propelled machines:
Horizontal –axis machine
Vertical-axis machines

Horizontal axis wind machines have blades in the shape of airplane propellers. Wind machines placed tall and extensive to tap more wind. Vertical Axis wind machines have blades that move from apex to base and the most ordinary type appears as a massive machines. Vertical-axis wind machines compose up to only a small percent of the wind machines used today.

Wind energy is a cost-effective power reserve in many areas of the country. Wind is an unsoiled fuel; wind farms generate no air or water pollution as no fuel is burned. The most solemn environmental shortcoming of wind machines may be their depressing consequence on wild bird populations.

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Sunlight, wind, rain, tides and geothermal heat, are all naturally replenished and don’t dwindle with time and fall under renewable energy sources.

Sun is a great mass of energy in itself and has been showering its vigor since billions of years. Because of its immense power Sun has come into being the most powerful source of energy in terms of light and heat.

Around 1830s, a British Astronomer John Herschel used a solar driven cooker to make food in Africa. Of course, nowadays solar energy’s uses are beyond any comparison. Solar Energy can be a medium of energy provider through various techniques. A few of them are:

For heating water in houses, swimming pools or in some cases in buildings too
For heating spaces like inside the Greenhouse, homes, buildings, etc
For cooking food too it is extensively used.

Solar energy also has the potential to work as a great electricity provider. The Photovoltaic cells or in simple terms, Solar cells possess the power to convert sunlight directly into electricity and lead to running of electricity driven equipments. This sort of means is used in places that is far from any power grid and is devoid of electricity. Sunlight is composed of photons, or particles of solar energy. These photons contain a great amount of energy analogous to diverse wavelengths of the solar band. When photons hit a solar cell, they are returned or pass through, or be absorbed. Simply the absorbed photons supply energy to produce electricity. When sufficient sunlight is absorbed by the substance; to be precise, a semiconductor, electrons are removed from the material's atoms. Particular management of the material exterior during mechanizing makes the front surface of the cell more accessible to free electrons, so the electrons as expected drift to the surface.

When the electrons go away from their position, gap is created. When a lot of electrons, all carrying a negative charge, move in the direction of the surface of the cell, the consequential unevenness of charge between the cell's front and back surfaces forms a voltage as the negative and positive terminals of a battery. When the two surfaces are linked to an external load, electricity flows.

Another attribute of solar energy that produce electricity indirectly are Solar Power Plants. The mechanism of Solar Power Plants is very basic as the heat of the sun is used to warm up water that in turn produces steam that drives a generator. United States is known to have 15 solar driven generators across its area.

Solar energy is open, and its stores are infinite. Using solar energy creates no air or water pollution but does have some roundabout contact with the environment. For instance, developing the solar cells used to alter sunlight into electricity uses silicon and produces some waste products. In addition, huge solar thermal farms can also hurt desert bionetwork if not suitably handled.

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Did you know that you can convert your car or truck to a water-burning vehicle (Water Hybrid)?

Water4Gas is a Do-It-Yourself, affordable and SIMPLE technology. No big science, all simple.
Water is supplemental to gasoline or diesel fuel - I have doubled fuel economy (61 MPG) in my Toyota Corolla 1999 shown above, and many more have doubled or even tripled their mileage. Too good to be true? Read on...

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* Won't it damage my car/my warranty?
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Water4Gas is more affordable than any other technology that uses water to save fuel, boost mileage and clean out the engine - and in the next few minutes you will discover exactly HOW this is possible.

The movie below shows a broad agreement that water is the solution to our energy problems and also that petrol dependency of the US is a national security hazard!

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Water can be used to fuel a car when used as a supplement to gasoline. In fact, very little water is needed! only one quart of water provides over 1800 gallons of HHO gas which can literally last for months and significantly increase your vehicle's fuel efficiently, improve emissions quality, and save you money.

Thousands of successful water-conversions around the world are proof that this technology works and will soon catch on! Some industry insiders say its just a matter of time before this water-burning technology will be standard in new automobiles. One expert estimates most cars will be using this technology by 2012, but until the auto manufacturers catch up, you can use this technology for yourself today at a very reasonable set-up cost.


Learn More about how to Convert Your Car to Run On Water

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When a Montana boy moves to Florida and unearths a disturbing threat to a local population of endangered owls, three middle-schoolers take on greedy land developers, corrupt politicians, and clueless cops. Determined to protect his new environment, the boy and his friends fight to prevent the adults from making a big mistake.

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Biomass is macrobiotic matter prepared from plants and animals. Biomass includes stored energy from the sun. Plants absorb the sun's energy in a method called photosynthesis. The chemical energy in plants gets transferred on to the animals and people that eat them, all in a form of a big chain reaction biologically. Biomass is a renewable energy source since as we grow more trees and crops, more waste will always be there to renew. Some examples of biomass fuels are wood, crops, manure, and some garbage.

Smoldering biomass is not the only way to let loose its energy. Biomass can be transformed to other functional forms of energy like methane gas or transportation fuels like ethanol and biodiesel. Methane gas forms as the main component of natural gas. Stuffs like decomposing garbage, and agricultural and human waste, discharge methane gas also referred as "biogas." Crops like corn and sugar cane can be fermented to manufacture the transportation fuel, ethanol. Biodiesel, another transportation fuel, can be produced from surplus food products like vegetable oils and animal fats.

The most widespread variety of biomass is wood. For many centuries, people have burned wood for heating and cooking. Wood was the main resource of energy in the U.S. and the rest of the world till the mid-18th century. Biomass persists to be a chief resource of energy in the developing world. In United States, wood and waste offer only about 2 percent of the energy used today.

About 84 percent of the total wood and wood waste fuel used in the United States is consumed by the industry, electric power producers, and commercial businesses. The rest, mainly wood, is used in homes for heating and cooking.

Various industrialized plants in the wood and paper products industry make use of wood waste to manufacture their own steam and electricity. This saves these companies financially as they neither have to dispose off their waste nor they have to buy electricity.

Another resource of biomass is the daily waste or garbage. Rubbish that appear from plant or animal products is biomass. Food scraps, lawn clippings, and leaves are all examples of biomass junk. They can be a rich source of energy by either burning them in waste-to-energy plants, or by confining biogas. In the former, waste is burned to generate steam that can be used also to heat buildings and generate electricity as well.

Biomass can contaminate the air when it is burned, though not at the extent of fossil fuels. Burning biomass fuels does not manufacture pollutants like sulfur that lead to acid rain. When burnt, biomass discharges carbon dioxide, a greenhouse gas. But when biomass crops are developed, a nearly corresponding quantity of carbon dioxide is used up through photosynthesis.

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Among the renewable energy sources that produce electricity, hydropower is the most common one. It calculated for a 7 % of total U.S. electricity generation. It is among the oldest resource of energy and was used many years ago to revolve a paddle wheel for reason such as grinding grain. The first U.S. hydroelectric power plant opened on the Fox River near Appleton, Wisconsin, on September 30, 1882. Before that, coal was the solitary fuel used to produce electricity. Since the supply of hydropower is water, hydroelectric power plants must be situated on a water resource. Consequently, when the expertise to broadcast electricity over stretched distances was urbanized, hydropower happens to be extensively used.

Mechanical energy is consequent to the directing, harnessing, or channeling moving water. The quantity of obtainable energy in moving water is dogged by its run or drop. In any of the above case the process remains the same. The watercourses through a pipe, or then pushes against the blades and turns it in a turbine to whirl a generator to generate electricity. In a run-of-the-river system, the energy of the current relate to the needed pressure, while in a storage system, water is mounted up in tanks formed by dams, and released when the requirement for power is elevated.

It is not as much expensive as fossil fuels and does not add to the greenhouse effect. Contrary to other renewable energy resources like the sun or wind, water can be accumulated which makes it a better alternative to create electricity. Rivers, dams and waterfalls can be used to produce hydro-electricity. Hydroelectric posting is built where there is running water. The most widespread are located in dams, where water can be stored sufficiently.

Hydroelectricity makes available approximately 10% of the electricity spawned in Australia and 18% all over the world. Hydro-power is the principal source of renewable energy. It supplies more than 97% of energy formed by renewable sources. Other renewable sources accounts for a mere 3% of the production.

The basic in which it scores over other renewable sources are:

Hydroelectricity emits no gas or waste.
It is more consistent than solar and wind power as water can be stored and there is additional of it,
Hydroelectric stations are economical to manage.

However, they do have their own set of problems that can sometimes create lot problems:

Large dams acquire bulky areas of land and can lead fish and other animals to displace.
Plant life can be affected by alter in water value.
The power positions are costly to construct.

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