Simply put, it is renewable versus non-renewable energy. The fact that mother earth is in the verge of running out of fossil fuels (studies show an estimate of how much fossil fuel reserve remains), its cost and the environmental effect of its use had spawned ideas about the use of clean energy. Examples of fossil fuel include coal, petroleum, and natural gas. Their benefits affect our everyday lives. Think of electricity, transportation and infrastructures. We have become so dependent on it that we have actually doubled up our usage in one hundred years. And fossil fuel is not renewable, meaning once we have used up its resources, there will be no more. While it is true that fossil fuel can be cheap (true among countries who produce them), readily available and convenient to use, and its importance deeply ingrained in our daily lives, the environmental effect of its usage is slowly making its presence felt as well.
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