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Introduction
Every day, the world produces carbon dioxide that is released to the earth’s atmosphere and which will still be there in one hundred years time. There are a number of researchers working to uncover and develop new energy sources from cold fusion technology to extracting zero point energy. These pioneers are striving to discover a way to tap the abundant energies of the atom or the space around us. Unfortunately, the efforts lack both governmental and traditional science support. The revolutionary and world-changing discoveries of the past also suffered from this lack of support. Even without large funding resources, these researchers have built a fascinating body of work that will intrigue you. If even one of these researchers achieves his goal, your world will never be the same. Scientists, engineers, and professional researchers are excited about a plethora of new emerging energy systems that, with sufficient financial and government support, might be developed and brought to market in time to help society make the transition from limited and polluting fossil-fuel-dependent energy systems to a future of clean, decentralized power generation. Forward-looking scientists and engineers see a bright future of high-power energy packages, such as advanced batteries, inexpensive fuel cells, microgenerators of cheap electricity as well as decentralized power sources that will be affordable and environmentally clean. Modular, on-site heat and electricity generators will replace our current centralized utility-based energy system. This will be especially important in developing nations that cannot afford the extensive infrastructure of high voltage wires needed to distribute electricity. In fact, there are many new technologies in the theoretical or research and development stages that have the potential to convert energy into useful work.

Non-renewable energy is energy from fossil fuels (coal, crude oil, natural gas) and uranium. Fossil fuels are mainly made up of Carbon. It is believed that fossil fuels were formed over 300 million years ago, when the earth was a lot different in its landscape. It had swampy forests and very shallow seas. This time is referred to as 'Carboniferous Period'. Alternative energy refers to energy sources that have no undesired consequences such for example fossil fuels or nuclear energy. Alternative energy sources are renewable and are thought to be "free" energy sources. They all have lower carbon emissions, compared to conventional energy sources. These include Biomass Energy, Wind Energy, Solar Energy, Geothermal Energy, Hydroelectric Energy sources. Combined with the use of recycling, the use of clean alternative energies such as the home use of solar power systems will help ensure man's survival into the 21st century and beyond. Renewable energy is generally defined as energy that comes from resources which are naturally replenished on a human timescale such as sunlight, wind, rain, tides, waves and geothermal heat.

definition
Energy exists freely in nature. Some of them exist infinitely (never run out, called RENEWABLE), the rest have finite amounts (they took millions of years to form, and will run out one day, called NON-RENEWABLE).

Types of Renewable Energy Resources
There are many forms of renewable energy. Most of these renewable energies depend in one way or another on sunlight. Wind and hydroelectric power are the direct result of differential heating of the Earth's surface which leads to air moving about (wind) and precipitation forming as the air is lifted. Solar energy is the direct conversion of sunlight using panels or collectors. Biomass energy is stored sunlight contained in plants. Other renewable energies that do not depend on sunlight are geothermal energy, which is a result of radioactive decay in the crust combined with the original heat of accreting the Earth, and tidal energy, which is a conversion of gravitational energy.

Solar Energy
This form of energy relies on the nuclear fusion power from the core of the Sun. This energy can be collected and converted in a few different ways. The range is from solar water heating with solar collectors or attic cooling with solar attic fans for domestic use to the complex technologies of direct conversion of sunlight to electrical energy using mirrors and boilers or photovoltaic cells. Unfortunately these are currently insufficient to fully power our modern society.

Wind Energy
The movement of the atmosphere is driven by differences of temperature at the Earth's surface due to varying temperatures of the Earth's surface when lit by sunlight. Wind energy can be used to pump water or generate electricity, but requires extensive areal coverage to produce significant amounts of energy

Tidal Energy
This form uses the gravitational potential of elevated water that was lifted from the oceans by sunlight. It is not strictly speaking renewable since all reservoirs eventually fill up and require very expensive excavation to become useful again. At this time, most of the available locations for hydroelectric dams are already used in the developed world.

Geothermal Energy
Energy left over from the original accretion of the planet and augmented by heat from radioactive decay seeps out slowly everywhere, everyday. In certain areas the geothermal gradient (increase in temperature with depth) is high enough to exploit to generate electricity. This possibility is limited to a few locations on Earth and many technical problems exist that limit its utility. Another form of geothermal energy is Earth energy, a result of the heat storage in the Earth's surface. Soil everywhere tends to stay at a relatively constant temperature, the yearly average, and can be used with heat pumps to heat a building in winter and cool a building in summer. This form of energy can lessen the need for other power to maintain comfortable temperatures in buildings, but cannot be used to produce electricity.