Is the World Facing an Energy Crisis?
Energy provides the necessary power to do work. We obtain energy by eating food. We use energy to push a shopping cart around. We use energy to walk. We use energy to perform all daily work. We use energy to maintain our biological function inside our body. Without any energy in our body, we would be literally dead. Energy stores inside our body allow us to carry out work. But humans have long been utilizing energy from the environment. Fire, for example, is one great evolutionary step that separates us from the animals in this planet. Our ancestors were able to cook meat with fire. They warded off beasts in the primitive world with fire. The manipulation of fire allows human to dominate the food chain. Wood has been the primary reagent for lighting fire prior to the Industrial Revolution. We learned to exploit other energy sources as technology progresses. Coal became the principal energy source until oil took over. Our usage of energy has......
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Approximate Pages: 9 (260 words per double-spaced page) |