Energy
Our current energy models rely primarily on the following components:
Hydrocarbon fuels (oil, natural gas, and coal) provide nearly 80 percent of world energy, but cause smog and acid rain, and may be linked to global warming.
Traditional biomass fuels (solid wood) provide almost 10 percent of world energy but contribute to deforestation, desertification, and air pollution.
Nuclear generation provides just over 6 percent of world energy, but generates toxic waste requires long-term safe disposal.
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