In the old incandescent bulbs, only 10% of the energy produced was used to light. The remaining 90% is dispersed into heat. The new energy-saving lamps instead have reversed this report.
Three quarters of the world's energy is still produced using fossil fuels.
If we could capture all the solar energy that reaches the earth's surface in one minute, we could meet the energy needs of the entire planet for a year.
Because of the exponential growth of the emerging economies, by 2030 it is expected that world energy consumption will grow by 55%.
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