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Why do we need Renewable Energy
- Our fossil fuel reserves are finite.
- As the finite resource become scarce, they will become more expensive, affecting all economies
- Over 80% of current energy needs are based on finite fossil fuel reserves
- Over 55% of current energy needs are based on oil and gas
- Geographical imbalance of reserves and consumption is a source for political conflict.
- Using fuels affects the environment
- Use of carbon-based fuels releases carbon dioxide
- Nuclear fuels produce radioactive waste
- Operational problems in nuclear power plant may lead to events with large-scale implications
- Combusting coal, oil, or gas necessarily has carbon dioxide (CO2) as a by-product
- Since the beginning of the industrial revolution, the CO2 content of the atmosphere has increased by about 30% from 280 to 370 ppm (parts per million)
- The annual increase of CO2 is consistent with the emission from using fossil fuels
- Since the beginning of the industrial revolution, the mean temperature has increased by about 1K.
- Changes through the millennium before were ±0.2K