Wednesday, March 5, 2008

Free Write

The prospect of climate change has the world searching for alternatives to fossil fuel to keep our homes warm, our factories humming, and our cars moving. Energy plays a prominent role in human society. As a result of technological and industrial development, the demand for energy is rapidly increasing. Existing energy sources that are mainly fossil fuel based are leaving enormous amounts of waste and pollution apart from diminishing supply of fuel (Ramachandra). Therefore, the focus is now shifted to other sources of energy. Collectively known as alternative or renewable energy, possible sources include solar, wind, tide, biomass, geothermal, hydropower, and hydrogen. Renewable energy technologies are clean sources of energy that have a much lower environmental impact than other types of energy. Solar energy is one such renewable type. We have used the energy of the sun as far back as 5,000 years ago. People "worshipped" the sun. The influence of the sun appears in religions such as Hinduism, Buddhism, the Aztecs of Mexico, the Incas of Peru, and many Native American tribes (solar energy). Today I’m going to talk about the ways solar energy can have a positive effect on the environment as well as how it can lower the costs of energy for consumers.

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