Solar Impulse set to take off early Wednesday

A solar-powered plane that has been trapped in Japan for three weeks by the rainy season is set to take off for Hawaii early Wednesday, the team said.

Novel battery uses light to produce power

To move the world toward sustainability, scientists are continuing to explore and improve ways to tap the vast power of sunlight to make fuels and generate electricity. Now they have come up with a brand-new way to use light—solar ...

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