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创新英语-Scientists Create Energy-Making Artificial Leaf

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Scientists at the Massachusetts Institute of Technology (MIT) have created what could be a breakthrough in providing clean, alternative energy. Researchers have invented an artificial leaf that splits water into hydrogen and oxygen and stores the energy in a fuel cell. The device is about the size and shape of a playing card, but is even thinner. It is made from silicon and electronic components. The MIT team says it could power a home in a developing country for a whole day just by putting it into water under the Sun. The artificial leaf is also cheap to produce. Research team leader Daniel Nocera said a prototype of his leaf in his laboratory operated non-stop for over 45 hours with no drop in activity.

Technology that can efficiently turn sunlight and water into energy has long been seen as the Holy Grail of science. The conversion of solar energy into hydrogen is one of the answers to the question of how to provide an effective alternative to fossil fuels and thus end our dependence on oil. Nocera’s invention could even help save the planet, by turning around global warming. Furthermore, in light of the events at Fukushima, Japan, it might also prove to be a safe replacement for nuclear energy. However, this is all wishful thinking at the moment. The technology, although highly promising, is still in its early stages of development. In the near future, it could provide energy to people in remote areas of sunnier countries.

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