POWER SWITCH

摘要

In most of the modern world, an uninterrupted supply of electricity is considered a given. To maintair that supply, however, demands a rethinking of how we generate, store and manage our electricity. Foremost among the necessary changes is a reduction of the dependence on fossil fuels, the continued availability of which is in doubt. Mass consumption of fossil fuels also, of course, results in the emission of CO_2, perceived as being largely responsible for climate change, which, according to UNESCO, is "an issue that already affects and will increasingly impact all nations," adding that "progress is required on effective mitigation." There is ample evidence of such progress already: More energy is available worldwide from renewable sources than from nuclear sources, according to the U.S.-based WorldWatch Institute.