The Federal Energy Regulatory Commission ordered the dam removed after concluding that the environmental and economic benefits of a free-flowing river outweighed the electricity generated by the dam.

美国联邦能源监管委员会得出结论说，一条自由流动的河流所带来的环境和经济效益超过了大坝产生的电力，因此下令拆除大坝。

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For decades, scientists have pumped electricity into piezoelectric materials for use in environmental sensors, speakers and other devices.

几十年以来，科学家们已经能够将电能灌入压电材料，以用于环境传感器、扬声器与其他设备。

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Ethiopia is building three DAMS, two of them large and one controversial, for environmental reasons; and Egypt will take some of the electricity generated, via Sudan.

埃塞俄比亚正在建设三座水坝，其中两座规模庞大，另一座因环境因素引发争议；而埃及将获得一部分电力，途经苏丹。

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"If you are considering purchasing an electric vehicle for its environmental benefits, first check your electricity source and second look closely at the warranty on the batteries, " said Professor Stromman.

BBC: Electric cars 'pose environmental threat'

But not everyone implemented electricity-generating bicycles for environmental reasons.

CNN: Pedal power is fueling green awareness

The solar technology enables an efficient module, portable, and lightweight to convert solar energy into electricity under a wide range of environmental conditions.

FORBES: Connect